189379699 has 4 divisors (see below), whose sum is σ = 189423520. Its totient is φ = 189335880.

The previous prime is 189379691. The next prime is 189379703. The reversal of 189379699 is 996973981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 996973981 = 31 ⋅32160451.

It is a cyclic number.

It is not a de Polignac number, because 189379699 - 2³ = 189379691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189379691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14619 + ... + 24340.

It is an arithmetic number, because the mean of its divisors is an integer number (47355880).

Almost surely, 2^189379699 is an apocalyptic number.

189379699 is a deficient number, since it is larger than the sum of its proper divisors (43821).

189379699 is an equidigital number, since it uses as much as digits as its factorization.

189379699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43820.

The product of its digits is 6613488, while the sum is 61.

The square root of 189379699 is about 13761.5296751488. The cubic root of 189379699 is about 574.2634036135.

The spelling of 189379699 in words is "one hundred eighty-nine million, three hundred seventy-nine thousand, six hundred ninety-nine".