490990615 has 4 divisors (see below), whose sum is σ = 589188744. Its totient is φ = 392792488.

The previous prime is 490990613. The next prime is 490990639. The reversal of 490990615 is 516099094.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 490990615 - 2¹ = 490990613 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 (490990613) 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, 49099057 + ... + 49099066.

It is an arithmetic number, because the mean of its divisors is an integer number (147297186).

Almost surely, 2^490990615 is an apocalyptic number.

490990615 is a deficient number, since it is larger than the sum of its proper divisors (98198129).

490990615 is an equidigital number, since it uses as much as digits as its factorization.

490990615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98198128.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 490990615 is about 22158.3080355879. The cubic root of 490990615 is about 788.9044339513.

The spelling of 490990615 in words is "four hundred ninety million, nine hundred ninety thousand, six hundred fifteen".