396378776 has 8 divisors (see below), whose sum is σ = 743210220. Its totient is φ = 198189384.

The previous prime is 396378769. The next prime is 396378781. The reversal of 396378776 is 677873693.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×396378776² = 314232268126516352, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24773666 + ... + 24773681.

Almost surely, 2^396378776 is an apocalyptic number.

It is an amenable number.

396378776 is a deficient number, since it is larger than the sum of its proper divisors (346831444).

396378776 is a wasteful number, since it uses less digits than its factorization.

396378776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49547353 (or 49547349 counting only the distinct ones).

The product of its digits is 8001504, while the sum is 56.

The square root of 396378776 is about 19909.2635725182. The cubic root of 396378776 is about 734.5761055532.

The spelling of 396378776 in words is "three hundred ninety-six million, three hundred seventy-eight thousand, seven hundred seventy-six".