396786634 has 4 divisors (see below), whose sum is σ = 595179954. Its totient is φ = 198393316.

The previous prime is 396786617. The next prime is 396786641. The reversal of 396786634 is 436687693.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 388681225 + 8105409 = 19715^2 + 2847^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99196657 + ... + 99196660.

Almost surely, 2^396786634 is an apocalyptic number.

396786634 is a deficient number, since it is larger than the sum of its proper divisors (198393320).

396786634 is a wasteful number, since it uses less digits than its factorization.

396786634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198393319.

The product of its digits is 3919104, while the sum is 52.

The square root of 396786634 is about 19919.5038592832. The cubic root of 396786634 is about 734.8279690554.

It can be divided in two parts, 3967 and 86634, that added together give a square (90601 = 301²).

The spelling of 396786634 in words is "three hundred ninety-six million, seven hundred eighty-six thousand, six hundred thirty-four".