344979621 has 64 divisors (see below), whose sum is σ = 610675200. Its totient is φ = 188310528.

The previous prime is 344979619. The next prime is 344979631. The reversal of 344979621 is 126979443.

It is a happy number.

It is not a de Polignac number, because 344979621 - 2¹ = 344979619 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344979611) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 619075 + ... + 619631.

It is an arithmetic number, because the mean of its divisors is an integer number (9541800).

Almost surely, 2^344979621 is an apocalyptic number.

It is an amenable number.

344979621 is a deficient number, since it is larger than the sum of its proper divisors (265695579).

344979621 is a wasteful number, since it uses less digits than its factorization.

344979621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715 (or 709 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 344979621 is about 18573.6270286662. The cubic root of 344979621 is about 701.3440984425.

The spelling of 344979621 in words is "three hundred forty-four million, nine hundred seventy-nine thousand, six hundred twenty-one".