390990404841 has 4 divisors (see below), whose sum is σ = 521320539792. Its totient is φ = 260660269892.

The previous prime is 390990404771. The next prime is 390990404879. The reversal of 390990404841 is 148404099093.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 390990404841 - 2¹¹ = 390990402793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (390990404891) 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, 65165067471 + ... + 65165067476.

It is an arithmetic number, because the mean of its divisors is an integer number (130330134948).

Almost surely, 2^390990404841 is an apocalyptic number.

It is an amenable number.

390990404841 is a deficient number, since it is larger than the sum of its proper divisors (130330134951).

390990404841 is a wasteful number, since it uses less digits than its factorization.

390990404841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130330134950.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 390990404841 in words is "three hundred ninety billion, nine hundred ninety million, four hundred four thousand, eight hundred forty-one".