390039091 has 8 divisors (see below), whose sum is σ = 420337904. Its totient is φ = 359782560.

The previous prime is 390039077. The next prime is 390039101. The reversal of 390039091 is 190930093.

It is a happy number.

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 390039091 - 2⁵ = 390039059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390039491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10105 + ... + 29701.

It is an arithmetic number, because the mean of its divisors is an integer number (52542238).

Almost surely, 2^390039091 is an apocalyptic number.

390039091 is a deficient number, since it is larger than the sum of its proper divisors (30298813).

390039091 is a wasteful number, since it uses less digits than its factorization.

390039091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21141.

The product of its (nonzero) digits is 6561, while the sum is 34.

The square root of 390039091 is about 19749.4073581969. The cubic root of 390039091 is about 730.6387672282.

The spelling of 390039091 in words is "three hundred ninety million, thirty-nine thousand, ninety-one".