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2989207 = 13229939
BaseRepresentation
bin1011011001110010010111
312121212102101
423121302113
51231123312
6144022531
734256614
oct13316227
95555371
102989207
111761921
121001a47
13808780
1457b50b
153e0a57
hex2d9c97

2989207 has 4 divisors (see below), whose sum is σ = 3219160. Its totient is φ = 2759256.

The previous prime is 2989201. The next prime is 2989211. The reversal of 2989207 is 7029892.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2989207 - 219 = 2464919 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2989201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114957 + ... + 114982.

It is an arithmetic number, because the mean of its divisors is an integer number (804790).

22989207 is an apocalyptic number.

2989207 is a deficient number, since it is larger than the sum of its proper divisors (229953).

2989207 is a wasteful number, since it uses less digits than its factorization.

2989207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229952.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 2989207 is about 1728.9323295028. The cubic root of 2989207 is about 144.0517914269.

The spelling of 2989207 in words is "two million, nine hundred eighty-nine thousand, two hundred seven".

Divisors: 1 13 229939 2989207