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830197149 = 3279798939
BaseRepresentation
bin110001011110111…
…100110110011101
32010212011101101120
4301132330312131
53200012302044
6214214001153
726400362565
oct6136746635
92125141346
10830197149
11396696451
121b20461b9
13102cc6822
147c389da5
154cd3e519
hex317bcd9d

830197149 has 8 divisors (see below), whose sum is σ = 1107336480. Its totient is φ = 553261296.

The previous prime is 830197133. The next prime is 830197177. The reversal of 830197149 is 941791038.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 830197149 - 24 = 830197133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 830197149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (830193149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41079 + ... + 57860.

It is an arithmetic number, because the mean of its divisors is an integer number (138417060).

Almost surely, 2830197149 is an apocalyptic number.

It is an amenable number.

830197149 is a deficient number, since it is larger than the sum of its proper divisors (277139331).

830197149 is a wasteful number, since it uses less digits than its factorization.

830197149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101739.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 830197149 is about 28813.1419494647. The cubic root of 830197149 is about 939.8540398841.

The spelling of 830197149 in words is "eight hundred thirty million, one hundred ninety-seven thousand, one hundred forty-nine".

Divisors: 1 3 2797 8391 98939 296817 276732383 830197149