189896139 has 12 divisors (see below), whose sum is σ = 274456000. Its totient is φ = 126522864.

The previous prime is 189896131. The next prime is 189896143. The reversal of 189896139 is 931698981.

189896139 is a `hidden beast` number, since 18 + 9 + 8 + 9 + 613 + 9 = 666.

It is not a de Polignac number, because 189896139 - 2³ = 189896131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189896131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13062 + ... + 23460.

Almost surely, 2^189896139 is an apocalyptic number.

189896139 is a deficient number, since it is larger than the sum of its proper divisors (84559861).

189896139 is a wasteful number, since it uses less digits than its factorization.

189896139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12434 (or 12431 counting only the distinct ones).

The product of its digits is 839808, while the sum is 54.

The square root of 189896139 is about 13780.2808026542. The cubic root of 189896139 is about 574.7849368368.

The spelling of 189896139 in words is "one hundred eighty-nine million, eight hundred ninety-six thousand, one hundred thirty-nine".