390277716 has 12 divisors (see below), whose sum is σ = 910648032. Its totient is φ = 130092568.

The previous prime is 390277711. The next prime is 390277717. The reversal of 390277716 is 617772093.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390277711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16261560 + ... + 16261583.

It is an arithmetic number, because the mean of its divisors is an integer number (75887336).

Almost surely, 2^390277716 is an apocalyptic number.

It is an amenable number.

390277716 is an abundant number, since it is smaller than the sum of its proper divisors (520370316).

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

390277716 is a wasteful number, since it uses less digits than its factorization.

390277716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32523150 (or 32523148 counting only the distinct ones).

The product of its (nonzero) digits is 111132, while the sum is 42.

The square root of 390277716 is about 19755.4477549865. The cubic root of 390277716 is about 730.7877378798.

It can be divided in two parts, 3902 and 77716, that added together give a palindrome (81618).

The spelling of 390277716 in words is "three hundred ninety million, two hundred seventy-seven thousand, seven hundred sixteen".