397837629 has 16 divisors (see below), whose sum is σ = 673587840. Its totient is φ = 227335680.

The previous prime is 397837619. The next prime is 397837633. The reversal of 397837629 is 926738793.

397837629 is a `hidden beast` number, since 3 + 9 + 7 + 8 + 3 + 7 + 629 = 666.

It is not a de Polignac number, because 397837629 - 2⁵ = 397837597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397837619) 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 15 ways as a sum of consecutive naturals, for example, 1052292 + ... + 1052669.

It is an arithmetic number, because the mean of its divisors is an integer number (42099240).

Almost surely, 2^397837629 is an apocalyptic number.

It is an amenable number.

397837629 is a deficient number, since it is larger than the sum of its proper divisors (275750211).

397837629 is a wasteful number, since it uses less digits than its factorization.

397837629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104977 (or 2104971 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 54.

The square root of 397837629 is about 19945.8674667210. The cubic root of 397837629 is about 735.4761928746.

The spelling of 397837629 in words is "three hundred ninety-seven million, eight hundred thirty-seven thousand, six hundred twenty-nine".