390233669 has 8 divisors (see below), whose sum is σ = 447199488. Its totient is φ = 333572400.

The previous prime is 390233659. The next prime is 390233681. The reversal of 390233669 is 966332093.

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

It is not a de Polignac number, because 390233669 - 2¹⁶ = 390168133 is a prime.

It is a super-2 number, since 2×390233669² = 304564632842403122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390233639) 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, 73382 + ... + 78519.

It is an arithmetic number, because the mean of its divisors is an integer number (55899936).

Almost surely, 2^390233669 is an apocalyptic number.

It is an amenable number.

390233669 is a deficient number, since it is larger than the sum of its proper divisors (56965819).

390233669 is a wasteful number, since it uses less digits than its factorization.

390233669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152275.

The product of its (nonzero) digits is 157464, while the sum is 41.

The square root of 390233669 is about 19754.3329171096. The cubic root of 390233669 is about 730.7602444503.

The spelling of 390233669 in words is "three hundred ninety million, two hundred thirty-three thousand, six hundred sixty-nine".