491029693 has 8 divisors (see below), whose sum is σ = 612192960. Its totient is φ = 382620480.

The previous prime is 491029657. The next prime is 491029697. The reversal of 491029693 is 396920194.

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

It is not a de Polignac number, because 491029693 - 2¹³ = 491021501 is a prime.

It is a super-2 number, since 2×491029693² = 482220318815348498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491029697) 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, 3188428 + ... + 3188581.

It is an arithmetic number, because the mean of its divisors is an integer number (76524120).

Almost surely, 2^491029693 is an apocalyptic number.

It is an amenable number.

491029693 is a deficient number, since it is larger than the sum of its proper divisors (121163267).

491029693 is a wasteful number, since it uses less digits than its factorization.

491029693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6377027.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 491029693 is about 22159.1898091965. The cubic root of 491029693 is about 788.9253630612.

The spelling of 491029693 in words is "four hundred ninety-one million, twenty-nine thousand, six hundred ninety-three".