354390644 has 12 divisors (see below), whose sum is σ = 623649600. Its totient is φ = 176205048.

The previous prime is 354390599. The next prime is 354390703. The reversal of 354390644 is 446093453.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 354390598 and 354390607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246764 + ... + 248195.

It is an arithmetic number, because the mean of its divisors is an integer number (51970800).

Almost surely, 2^354390644 is an apocalyptic number.

It is an amenable number.

354390644 is a deficient number, since it is larger than the sum of its proper divisors (269258956).

354390644 is a wasteful number, since it uses less digits than its factorization.

354390644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495142 (or 495140 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 354390644 is about 18825.2661070169. The cubic root of 354390644 is about 707.6645101013.

The spelling of 354390644 in words is "three hundred fifty-four million, three hundred ninety thousand, six hundred forty-four".