397277402 has 8 divisors (see below), whose sum is σ = 596666196. Its totient is φ = 198388672.

The previous prime is 397277389. The next prime is 397277449. The reversal of 397277402 is 204772793.

It can be written as a sum of positive squares in 2 ways, for example, as 387735481 + 9541921 = 19691^2 + 3089^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 397277402.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 123023 + ... + 126210.

Almost surely, 2^397277402 is an apocalyptic number.

397277402 is a deficient number, since it is larger than the sum of its proper divisors (199388794).

397277402 is a wasteful number, since it uses less digits than its factorization.

397277402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250032.

The product of its (nonzero) digits is 148176, while the sum is 41.

The square root of 397277402 is about 19931.8188332124. The cubic root of 397277402 is about 735.1308030737.

The spelling of 397277402 in words is "three hundred ninety-seven million, two hundred seventy-seven thousand, four hundred two".