396649380 has 48 divisors (see below), whose sum is σ = 1127206080. Its totient is φ = 104193408.

The previous prime is 396649349. The next prime is 396649391. The reversal of 396649380 is 83946693.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45315 + ... + 53354.

It is an arithmetic number, because the mean of its divisors is an integer number (23483460).

Almost surely, 2^396649380 is an apocalyptic number.

396649380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

396649380 is an abundant number, since it is smaller than the sum of its proper divisors (730556700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

396649380 is a wasteful number, since it uses less digits than its factorization.

396649380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98748 (or 98746 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 48.

The square root of 396649380 is about 19916.0583449637. The cubic root of 396649380 is about 734.7432302218.

The spelling of 396649380 in words is "three hundred ninety-six million, six hundred forty-nine thousand, three hundred eighty".