390452043 has 4 divisors (see below), whose sum is σ = 520602728. Its totient is φ = 260301360.

The previous prime is 390452017. The next prime is 390452047. The reversal of 390452043 is 340254093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340254093 = 3 ⋅113418031.

It is not a de Polignac number, because 390452043 - 2⁵ = 390452011 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 390452043.

It is not an unprimeable number, because it can be changed into a prime (390452047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65075338 + ... + 65075343.

It is an arithmetic number, because the mean of its divisors is an integer number (130150682).

Almost surely, 2^390452043 is an apocalyptic number.

390452043 is a deficient number, since it is larger than the sum of its proper divisors (130150685).

390452043 is a wasteful number, since it uses less digits than its factorization.

390452043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130150684.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 390452043 is about 19759.8593871515. The cubic root of 390452043 is about 730.8965297010.

The spelling of 390452043 in words is "three hundred ninety million, four hundred fifty-two thousand, forty-three".