396787629 has 8 divisors (see below), whose sum is σ = 604628800. Its totient is φ = 226735776.

The previous prime is 396787619. The next prime is 396787649. The reversal of 396787629 is 926787693.

It is a happy number.

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

It is not a de Polignac number, because 396787629 - 2⁸ = 396787373 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396787609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9447304 + ... + 9447345.

It is an arithmetic number, because the mean of its divisors is an integer number (75578600).

Almost surely, 2^396787629 is an apocalyptic number.

It is an amenable number.

396787629 is a deficient number, since it is larger than the sum of its proper divisors (207841171).

396787629 is a wasteful number, since it uses less digits than its factorization.

396787629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18894659.

The product of its digits is 6858432, while the sum is 57.

The square root of 396787629 is about 19919.5288347892. The cubic root of 396787629 is about 734.8285832841.

The spelling of 396787629 in words is "three hundred ninety-six million, seven hundred eighty-seven thousand, six hundred twenty-nine".