397556030 has 8 divisors (see below), whose sum is σ = 715600872. Its totient is φ = 159022408.

The previous prime is 397555993. The next prime is 397556063. The reversal of 397556030 is 30655793.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19877792 + ... + 19877811.

It is an arithmetic number, because the mean of its divisors is an integer number (89450109).

Almost surely, 2^397556030 is an apocalyptic number.

397556030 is a deficient number, since it is larger than the sum of its proper divisors (318044842).

397556030 is a wasteful number, since it uses less digits than its factorization.

397556030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39755610.

The product of its (nonzero) digits is 85050, while the sum is 38.

The square root of 397556030 is about 19938.8071358344. The cubic root of 397556030 is about 735.3026226957.

The spelling of 397556030 in words is "three hundred ninety-seven million, five hundred fifty-six thousand, thirty".