390142893 has 8 divisors (see below), whose sum is σ = 594503488. Its totient is φ = 222938784.

The previous prime is 390142871. The next prime is 390142897. The reversal of 390142893 is 398241093.

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

It is not a de Polignac number, because 390142893 - 2¹⁶ = 390077357 is a prime.

It is a super-2 number, since 2×390142893² = 304422953916818898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390142897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9289096 + ... + 9289137.

It is an arithmetic number, because the mean of its divisors is an integer number (74312936).

Almost surely, 2^390142893 is an apocalyptic number.

It is an amenable number.

390142893 is a deficient number, since it is larger than the sum of its proper divisors (204360595).

390142893 is a wasteful number, since it uses less digits than its factorization.

390142893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18578243.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 390142893 is about 19752.0351609651. The cubic root of 390142893 is about 730.7035770042.

The spelling of 390142893 in words is "three hundred ninety million, one hundred forty-two thousand, eight hundred ninety-three".