189296639 has 8 divisors (see below), whose sum is σ = 227725440. Its totient is φ = 153714456.

The previous prime is 189296629. The next prime is 189296651. The reversal of 189296639 is 936692981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 189296639 - 2⁴ = 189296623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189296629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 711509 + ... + 711774.

It is an arithmetic number, because the mean of its divisors is an integer number (28465680).

Almost surely, 2^189296639 is an apocalyptic number.

189296639 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

189296639 is a deficient number, since it is larger than the sum of its proper divisors (38428801).

189296639 is a wasteful number, since it uses less digits than its factorization.

189296639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423309.

The product of its digits is 1259712, while the sum is 53.

The square root of 189296639 is about 13758.5115110611. The cubic root of 189296639 is about 574.1794359837.

The spelling of 189296639 in words is "one hundred eighty-nine million, two hundred ninety-six thousand, six hundred thirty-nine".