390042286 has 16 divisors (see below), whose sum is σ = 605705040. Its totient is φ = 188151040.

The previous prime is 390042283. The next prime is 390042299. The reversal of 390042286 is 682240093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390042283) 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, 145470 + ... + 148126.

It is an arithmetic number, because the mean of its divisors is an integer number (37856565).

Almost surely, 2^390042286 is an apocalyptic number.

390042286 is a deficient number, since it is larger than the sum of its proper divisors (215662754).

390042286 is a wasteful number, since it uses less digits than its factorization.

390042286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5219.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 390042286 is about 19749.4882465344. The cubic root of 390042286 is about 730.6407622287.

The spelling of 390042286 in words is "three hundred ninety million, forty-two thousand, two hundred eighty-six".