390621029 has 12 divisors (see below), whose sum is σ = 413394336. Its totient is φ = 368403552.

The previous prime is 390621017. The next prime is 390621041. The reversal of 390621029 is 920126093.

It is an interprime number because it is at equal distance from previous prime (390621017) and next prime (390621041).

It is not a de Polignac number, because 390621029 - 2¹⁶ = 390555493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 390620986 and 390621004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390621929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120974 + ... + 124160.

It is an arithmetic number, because the mean of its divisors is an integer number (34449528).

Almost surely, 2^390621029 is an apocalyptic number.

It is an amenable number.

390621029 is a deficient number, since it is larger than the sum of its proper divisors (22773307).

390621029 is an equidigital number, since it uses as much as digits as its factorization.

390621029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3356 (or 3283 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 390621029 is about 19764.1349165604. The cubic root of 390621029 is about 731.0019574729.

The spelling of 390621029 in words is "three hundred ninety million, six hundred twenty-one thousand, twenty-nine".