390944029 has 4 divisors (see below), whose sum is σ = 446793184. Its totient is φ = 335094876.

The previous prime is 390944023. The next prime is 390944039. The reversal of 390944029 is 920449093.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 920449093 = 463 ⋅1988011.

It is a cyclic number.

It is not a de Polignac number, because 390944029 - 2⁵ = 390943997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 390943982 and 390944000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390944023) 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, 27924567 + ... + 27924580.

It is an arithmetic number, because the mean of its divisors is an integer number (111698296).

Almost surely, 2^390944029 is an apocalyptic number.

It is an amenable number.

390944029 is a deficient number, since it is larger than the sum of its proper divisors (55849155).

390944029 is an equidigital number, since it uses as much as digits as its factorization.

390944029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55849154.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 390944029 is about 19772.3045950643. The cubic root of 390944029 is about 731.2033876442.

The spelling of 390944029 in words is "three hundred ninety million, nine hundred forty-four thousand, twenty-nine".