396216774 has 24 divisors (see below), whose sum is σ = 859235832. Its totient is φ = 131954400.

The previous prime is 396216767. The next prime is 396216781. The reversal of 396216774 is 477612693.

It is an interprime number because it is at equal distance from previous prime (396216767) and next prime (396216781).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 12249 + ... + 30699.

It is an arithmetic number, because the mean of its divisors is an integer number (35801493).

Almost surely, 2^396216774 is an apocalyptic number.

396216774 is an abundant number, since it is smaller than the sum of its proper divisors (463019058).

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

396216774 is a wasteful number, since it uses less digits than its factorization.

396216774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19652 (or 19649 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 396216774 is about 19905.1946486338. The cubic root of 396216774 is about 734.4760169330.

It can be divided in two parts, 3962 and 16774, that added together give a 4-th power (20736 = 12⁴).

The spelling of 396216774 in words is "three hundred ninety-six million, two hundred sixteen thousand, seven hundred seventy-four".