612149269 has 4 divisors (see below), whose sum is σ = 612359244. Its totient is φ = 611939296.

The previous prime is 612149261. The next prime is 612149297. The reversal of 612149269 is 962941216.

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

It can be written as a sum of positive squares in 2 ways, for example, as 122102500 + 490046769 = 11050^2 + 22137^2 .

It is a cyclic number.

It is not a de Polignac number, because 612149269 - 2³ = 612149261 is a prime.

It is a super-2 number, since 2×612149269² = 749453455074468722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 (612149261) 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, 100552 + ... + 106465.

It is an arithmetic number, because the mean of its divisors is an integer number (153089811).

Almost surely, 2^612149269 is an apocalyptic number.

It is an amenable number.

612149269 is a deficient number, since it is larger than the sum of its proper divisors (209975).

612149269 is a wasteful number, since it uses less digits than its factorization.

612149269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209974.

The product of its digits is 46656, while the sum is 40.

The square root of 612149269 is about 24741.6504906201. The cubic root of 612149269 is about 849.0874954858.

The spelling of 612149269 in words is "six hundred twelve million, one hundred forty-nine thousand, two hundred sixty-nine".