390947123 has 8 divisors (see below), whose sum is σ = 466222848. Its totient is φ = 320527944.

The previous prime is 390947119. The next prime is 390947129. The reversal of 390947123 is 321749093.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 390947123 - 2² = 390947119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (390947129) 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, 1213961 + ... + 1214282.

It is an arithmetic number, because the mean of its divisors is an integer number (58277856).

Almost surely, 2^390947123 is an apocalyptic number.

390947123 is a deficient number, since it is larger than the sum of its proper divisors (75275725).

390947123 is a wasteful number, since it uses less digits than its factorization.

390947123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2428273.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 390947123 is about 19772.3828356625. The cubic root of 390947123 is about 731.2053165966.

The spelling of 390947123 in words is "three hundred ninety million, nine hundred forty-seven thousand, one hundred twenty-three".