390967551 has 12 divisors (see below), whose sum is σ = 608171928. Its totient is φ = 240595344.

The previous prime is 390967529. The next prime is 390967561. The reversal of 390967551 is 155769093.

390967551 is a `hidden beast` number, since 3 + 9 + 0 + 96 + 7 + 551 = 666.

It is not a de Polignac number, because 390967551 - 2⁵ = 390967519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 390967497 and 390967506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390967561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1670685 + ... + 1670918.

It is an arithmetic number, because the mean of its divisors is an integer number (50680994).

Almost surely, 2^390967551 is an apocalyptic number.

390967551 is a deficient number, since it is larger than the sum of its proper divisors (217204377).

390967551 is a wasteful number, since it uses less digits than its factorization.

390967551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3341622 (or 3341619 counting only the distinct ones).

The product of its (nonzero) digits is 255150, while the sum is 45.

The square root of 390967551 is about 19772.8994080282. The cubic root of 390967551 is about 731.2180521655.

The spelling of 390967551 in words is "three hundred ninety million, nine hundred sixty-seven thousand, five hundred fifty-one".