992078507 has 4 divisors (see below), whose sum is σ = 1133804016. Its totient is φ = 850353000.

The previous prime is 992078497. The next prime is 992078531. The reversal of 992078507 is 705870299.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 992078507 - 2²⁰ = 991029931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (992078567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70862744 + ... + 70862757.

It is an arithmetic number, because the mean of its divisors is an integer number (283451004).

Almost surely, 2^992078507 is an apocalyptic number.

992078507 is a deficient number, since it is larger than the sum of its proper divisors (141725509).

992078507 is a wasteful number, since it uses less digits than its factorization.

992078507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141725508.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 992078507 is about 31497.2777712614. The cubic root of 992078507 is about 997.3524992588.

The spelling of 992078507 in words is "nine hundred ninety-two million, seventy-eight thousand, five hundred seven".