396979810 has 8 divisors (see below), whose sum is σ = 714563676. Its totient is φ = 158791920.

The previous prime is 396979763. The next prime is 396979823. The reversal of 396979810 is 18979693.

It can be written as a sum of positive squares in 2 ways, for example, as 370447009 + 26532801 = 19247^2 + 5151^2 .

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

It is a super-2 number, since 2×396979810² = 315185939095272200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19848981 + ... + 19849000.

Almost surely, 2^396979810 is an apocalyptic number.

396979810 is a deficient number, since it is larger than the sum of its proper divisors (317583866).

396979810 is a wasteful number, since it uses less digits than its factorization.

396979810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39697988.

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 396979810 is about 19924.3521852029. The cubic root of 396979810 is about 734.9472003042.

The spelling of 396979810 in words is "three hundred ninety-six million, nine hundred seventy-nine thousand, eight hundred ten".