390885143 has 8 divisors (see below), whose sum is σ = 432262416. Its totient is φ = 350481600.

The previous prime is 390885139. The next prime is 390885151. The reversal of 390885143 is 341588093.

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 390885143 - 2² = 390885139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 390885143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390882143) 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, 242588 + ... + 244193.

It is an arithmetic number, because the mean of its divisors is an integer number (54032802).

Almost surely, 2^390885143 is an apocalyptic number.

390885143 is a deficient number, since it is larger than the sum of its proper divisors (41377273).

390885143 is a wasteful number, since it uses less digits than its factorization.

390885143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486865.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 390885143 is about 19770.8154358893. The cubic root of 390885143 is about 731.1666732626.

The spelling of 390885143 in words is "three hundred ninety million, eight hundred eighty-five thousand, one hundred forty-three".