490391405 has 16 divisors (see below), whose sum is σ = 673244544. Its totient is φ = 335914560.

The previous prime is 490391389. The next prime is 490391423. The reversal of 490391405 is 504193094.

It is not a de Polignac number, because 490391405 - 2⁴ = 490391389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28874 + ... + 42596.

It is an arithmetic number, because the mean of its divisors is an integer number (42077784).

Almost surely, 2^490391405 is an apocalyptic number.

It is an amenable number.

490391405 is a deficient number, since it is larger than the sum of its proper divisors (182853139).

490391405 is a wasteful number, since it uses less digits than its factorization.

490391405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14756.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 490391405 is about 22144.7827941482. The cubic root of 490391405 is about 788.5833742774.

The spelling of 490391405 in words is "four hundred ninety million, three hundred ninety-one thousand, four hundred five".