397056026 has 4 divisors (see below), whose sum is σ = 595584042. Its totient is φ = 198528012.

The previous prime is 397056007. The next prime is 397056031. The reversal of 397056026 is 620650793.

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

It can be written as a sum of positive squares in only one way, i.e., 248094001 + 148962025 = 15751^2 + 12205^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99264005 + ... + 99264008.

Almost surely, 2^397056026 is an apocalyptic number.

397056026 is a deficient number, since it is larger than the sum of its proper divisors (198528016).

397056026 is a wasteful number, since it uses less digits than its factorization.

397056026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198528015.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 397056026 is about 19926.2647277406. The cubic root of 397056026 is about 734.9942313706.

The spelling of 397056026 in words is "three hundred ninety-seven million, fifty-six thousand, twenty-six".