390835081 has 8 divisors (see below), whose sum is σ = 481027904. Its totient is φ = 309232080.

The previous prime is 390835069. The next prime is 390835097. The reversal of 390835081 is 180538093.

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 390835081 - 2¹⁹ = 390310793 is a prime.

It is a super-2 number, since 2×390835081² = 305504121080553122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 390835081.

It is not an unprimeable number, because it can be changed into a prime (390836081) 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, 2147355 + ... + 2147536.

It is an arithmetic number, because the mean of its divisors is an integer number (60128488).

Almost surely, 2^390835081 is an apocalyptic number.

It is an amenable number.

390835081 is a deficient number, since it is larger than the sum of its proper divisors (90192823).

390835081 is a wasteful number, since it uses less digits than its factorization.

390835081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4294911.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 390835081 is about 19769.5493373015. The cubic root of 390835081 is about 731.1354575893.

The spelling of 390835081 in words is "three hundred ninety million, eight hundred thirty-five thousand, eighty-one".