390849877 has 8 divisors (see below), whose sum is σ = 430522560. Its totient is φ = 351867360.

The previous prime is 390849871. The next prime is 390849883. The reversal of 390849877 is 778948093.

It is an interprime number because it is at equal distance from previous prime (390849871) and next prime (390849883).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 390849877 - 2²⁷ = 256632149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390849871) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 171352 + ... + 173617.

It is an arithmetic number, because the mean of its divisors is an integer number (53815320).

Almost surely, 2^390849877 is an apocalyptic number.

It is an amenable number.

390849877 is a deficient number, since it is larger than the sum of its proper divisors (39672683).

390849877 is a wasteful number, since it uses less digits than its factorization.

390849877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345083.

The product of its (nonzero) digits is 3048192, while the sum is 55.

The square root of 390849877 is about 19769.9235456286. The cubic root of 390849877 is about 731.1446837687.

The spelling of 390849877 in words is "three hundred ninety million, eight hundred forty-nine thousand, eight hundred seventy-seven".