992109491 has 8 divisors (see below), whose sum is σ = 1064031120. Its totient is φ = 922158432.

The previous prime is 992109479. The next prime is 992109553. The reversal of 992109491 is 194901299.

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 992109491 - 2²⁶ = 925000627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (992109451) 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, 491600 + ... + 493613.

It is an arithmetic number, because the mean of its divisors is an integer number (133003890).

Almost surely, 2^992109491 is an apocalyptic number.

992109491 is a deficient number, since it is larger than the sum of its proper divisors (71921629).

992109491 is a wasteful number, since it uses less digits than its factorization.

992109491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985285.

The product of its (nonzero) digits is 52488, while the sum is 44.

The square root of 992109491 is about 31497.7696194508. The cubic root of 992109491 is about 997.3628820555.

The spelling of 992109491 in words is "nine hundred ninety-two million, one hundred nine thousand, four hundred ninety-one".