189079797 has 16 divisors (see below), whose sum is σ = 276143040. Its totient is φ = 114546432.

The previous prime is 189079789. The next prime is 189079799. The reversal of 189079797 is 797970981.

It is not a de Polignac number, because 189079797 - 2³ = 189079789 is a prime.

It is a super-2 number, since 2×189079797² = 71502339267122418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189079799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62443 + ... + 65400.

It is an arithmetic number, because the mean of its divisors is an integer number (17258940).

Almost surely, 2^189079797 is an apocalyptic number.

189079797 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

189079797 is a deficient number, since it is larger than the sum of its proper divisors (87063243).

189079797 is a wasteful number, since it uses less digits than its factorization.

189079797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127892.

The product of its (nonzero) digits is 2000376, while the sum is 57.

The square root of 189079797 is about 13750.6289674327. The cubic root of 189079797 is about 573.9601086370.

The spelling of 189079797 in words is "one hundred eighty-nine million, seventy-nine thousand, seven hundred ninety-seven".