189476677 has 4 divisors (see below), whose sum is σ = 204051820. Its totient is φ = 174901536.

The previous prime is 189476659. The next prime is 189476687. The reversal of 189476677 is 776674981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 776674981 = 24907 ⋅31183.

It can be written as a sum of positive squares in 2 ways, for example, as 31371201 + 158105476 = 5601^2 + 12574^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189476677 is a prime.

It is a super-2 number, since 2×189476677² = 71802822253924658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189476627) 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, 7287552 + ... + 7287577.

It is an arithmetic number, because the mean of its divisors is an integer number (51012955).

Almost surely, 2^189476677 is an apocalyptic number.

It is an amenable number.

189476677 is a deficient number, since it is larger than the sum of its proper divisors (14575143).

189476677 is a wasteful number, since it uses less digits than its factorization.

189476677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14575142.

The product of its digits is 3556224, while the sum is 55.

The square root of 189476677 is about 13765.0527423617. The cubic root of 189476677 is about 574.3614102693.

The spelling of 189476677 in words is "one hundred eighty-nine million, four hundred seventy-six thousand, six hundred seventy-seven".