490351869 has 54 divisors (see below), whose sum is σ = 839797530. Its totient is φ = 274881600.

The previous prime is 490351853. The next prime is 490351871. The reversal of 490351869 is 968153094.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 381420900 + 108930969 = 19530^2 + 10437^2 .

It is not a de Polignac number, because 490351869 - 2⁴ = 490351853 is a prime.

It is a super-2 number, since 2×490351869² = 480889910863586322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490351879) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 4498587 + ... + 4498695.

Almost surely, 2^490351869 is an apocalyptic number.

490351869 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

490351869 is a deficient number, since it is larger than the sum of its proper divisors (349445661).

490351869 is a wasteful number, since it uses less digits than its factorization.

490351869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 490351869 is about 22143.8901053993. The cubic root of 490351869 is about 788.5621814983.

The spelling of 490351869 in words is "four hundred ninety million, three hundred fifty-one thousand, eight hundred sixty-nine".