491967402 has 16 divisors (see below), whose sum is σ = 988881600. Its totient is φ = 163164672.

The previous prime is 491967383. The next prime is 491967407. The reversal of 491967402 is 204769194.

It is not an unprimeable number, because it can be changed into a prime (491967407) 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, 204823 + ... + 207210.

It is an arithmetic number, because the mean of its divisors is an integer number (61805100).

Almost surely, 2^491967402 is an apocalyptic number.

491967402 is an abundant number, since it is smaller than the sum of its proper divisors (496914198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491967402 is a wasteful number, since it uses less digits than its factorization.

491967402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412237.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 491967402 is about 22180.3381849782. The cubic root of 491967402 is about 789.4272417372.

The spelling of 491967402 in words is "four hundred ninety-one million, nine hundred sixty-seven thousand, four hundred two".