396976990 has 8 divisors (see below), whose sum is σ = 714558600. Its totient is φ = 158790792.

The previous prime is 396976967. The next prime is 396976991. The reversal of 396976990 is 99679693.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396976991) 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, 19848840 + ... + 19848859.

It is an arithmetic number, because the mean of its divisors is an integer number (89319825).

Almost surely, 2^396976990 is an apocalyptic number.

396976990 is a deficient number, since it is larger than the sum of its proper divisors (317581610).

396976990 is a wasteful number, since it uses less digits than its factorization.

396976990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39697706.

The product of its (nonzero) digits is 4960116, while the sum is 58.

The square root of 396976990 is about 19924.2814174062. The cubic root of 396976990 is about 734.9454600343.

The spelling of 396976990 in words is "three hundred ninety-six million, nine hundred seventy-six thousand, nine hundred ninety".