490591951 has 8 divisors (see below), whose sum is σ = 524879600. Its totient is φ = 457151040.

The previous prime is 490591943. The next prime is 490591961. The reversal of 490591951 is 159195094.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 490591951 - 2³ = 490591943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 490591898 and 490591907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490591921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210486 + ... + 212803.

It is an arithmetic number, because the mean of its divisors is an integer number (65609950).

Almost surely, 2^490591951 is an apocalyptic number.

490591951 is a deficient number, since it is larger than the sum of its proper divisors (34287649).

490591951 is a wasteful number, since it uses less digits than its factorization.

490591951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423369.

The product of its (nonzero) digits is 72900, while the sum is 43.

The square root of 490591951 is about 22149.3103955857. The cubic root of 490591951 is about 788.6908569171.

The spelling of 490591951 in words is "four hundred ninety million, five hundred ninety-one thousand, nine hundred fifty-one".