490329621 has 12 divisors (see below), whose sum is σ = 718230240. Its totient is φ = 322281960.

The previous prime is 490329613. The next prime is 490329641. The reversal of 490329621 is 126923094.

490329621 is a `hidden beast` number, since 4 + 9 + 0 + 3 + 29 + 621 = 666.

It is not a de Polignac number, because 490329621 - 2³ = 490329613 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490329641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 383031 + ... + 384308.

It is an arithmetic number, because the mean of its divisors is an integer number (59852520).

Almost surely, 2^490329621 is an apocalyptic number.

It is an amenable number.

490329621 is a deficient number, since it is larger than the sum of its proper divisors (227900619).

490329621 is a wasteful number, since it uses less digits than its factorization.

490329621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767416 (or 767413 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 490329621 is about 22143.3877489421. The cubic root of 490329621 is about 788.5502552348.

It can be divided in two parts, 49032 and 9621, that added together give a triangular number (58653 = T₃₄₂).

The spelling of 490329621 in words is "four hundred ninety million, three hundred twenty-nine thousand, six hundred twenty-one".