390550007 has 4 divisors (see below), whose sum is σ = 390590760. Its totient is φ = 390509256.

The previous prime is 390550001. The next prime is 390550021. The reversal of 390550007 is 700055093.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 390550007 - 2²² = 386355703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390550001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2744 + ... + 28082.

It is an arithmetic number, because the mean of its divisors is an integer number (97647690).

Almost surely, 2^390550007 is an apocalyptic number.

390550007 is a deficient number, since it is larger than the sum of its proper divisors (40753).

390550007 is a wasteful number, since it uses less digits than its factorization.

390550007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40752.

The product of its (nonzero) digits is 4725, while the sum is 29.

The square root of 390550007 is about 19762.3380954785. The cubic root of 390550007 is about 730.9576516420.

The spelling of 390550007 in words is "three hundred ninety million, five hundred fifty thousand, seven".