397626007 has 4 divisors (see below), whose sum is σ = 397719000. Its totient is φ = 397533016.

The previous prime is 397625983. The next prime is 397626029. The reversal of 397626007 is 700626793.

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

It is a cyclic number.

It is not a de Polignac number, because 397626007 - 2²⁷ = 263408279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397626067) by changing a digit.

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, 39757 + ... + 48742.

It is an arithmetic number, because the mean of its divisors is an integer number (99429750).

Almost surely, 2^397626007 is an apocalyptic number.

397626007 is a deficient number, since it is larger than the sum of its proper divisors (92993).

397626007 is an equidigital number, since it uses as much as digits as its factorization.

397626007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92992.

The product of its (nonzero) digits is 95256, while the sum is 40.

The square root of 397626007 is about 19940.5618526660. The cubic root of 397626007 is about 735.3457623197.

The spelling of 397626007 in words is "three hundred ninety-seven million, six hundred twenty-six thousand, seven".