390969093 has 32 divisors (see below), whose sum is σ = 542134656. Its totient is φ = 250518528.

The previous prime is 390969091. The next prime is 390969109.

390969093 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 390969093 - 2¹ = 390969091 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390969091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2490171 + ... + 2490327.

It is an arithmetic number, because the mean of its divisors is an integer number (16941708).

Almost surely, 2^390969093 is an apocalyptic number.

It is an amenable number.

390969093 is a deficient number, since it is larger than the sum of its proper divisors (151165563).

390969093 is a wasteful number, since it uses less digits than its factorization.

390969093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453.

The product of its (nonzero) digits is 354294, while the sum is 48.

The square root of 390969093 is about 19772.9384007537. The cubic root of 390969093 is about 731.2190134872.

The spelling of 390969093 in words is "three hundred ninety million, nine hundred sixty-nine thousand, ninety-three".