390403995 has 8 divisors (see below), whose sum is σ = 624646416. Its totient is φ = 208215456.

The previous prime is 390403967. The next prime is 390403999. The reversal of 390403995 is 599304093.

It is a happy number.

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

It is not a de Polignac number, because 390403995 - 2¹² = 390399899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (390403999) 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, 13013452 + ... + 13013481.

It is an arithmetic number, because the mean of its divisors is an integer number (78080802).

Almost surely, 2^390403995 is an apocalyptic number.

390403995 is a deficient number, since it is larger than the sum of its proper divisors (234242421).

390403995 is a wasteful number, since it uses less digits than its factorization.

390403995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26026941.

The product of its (nonzero) digits is 131220, while the sum is 42.

The square root of 390403995 is about 19758.6435516206. The cubic root of 390403995 is about 730.8665477372.

The spelling of 390403995 in words is "three hundred ninety million, four hundred three thousand, nine hundred ninety-five".