390013643 has 4 divisors (see below), whose sum is σ = 412955640. Its totient is φ = 367071648.

The previous prime is 390013619. The next prime is 390013667. The reversal of 390013643 is 346310093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346310093 = 19 ⋅18226847.

It is an interprime number because it is at equal distance from previous prime (390013619) and next prime (390013667).

It is a cyclic number.

It is not a de Polignac number, because 390013643 - 2¹² = 390009547 is a prime.

It is a super-2 number, since 2×390013643² = 304221283452262898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390013693) 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 3 ways as a sum of consecutive naturals, for example, 11470973 + ... + 11471006.

It is an arithmetic number, because the mean of its divisors is an integer number (103238910).

Almost surely, 2^390013643 is an apocalyptic number.

390013643 is a deficient number, since it is larger than the sum of its proper divisors (22941997).

390013643 is a wasteful number, since it uses less digits than its factorization.

390013643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22941996.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 390013643 is about 19748.7630751903. The cubic root of 390013643 is about 730.6228767699.

The spelling of 390013643 in words is "three hundred ninety million, thirteen thousand, six hundred forty-three".