189477369 has 6 divisors (see below), whose sum is σ = 273689546. Its totient is φ = 126318240.

The previous prime is 189477349. The next prime is 189477401. The reversal of 189477369 is 963774981.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 143712144 + 45765225 = 11988^2 + 6765^2 .

It is not a de Polignac number, because 189477369 - 2⁷ = 189477241 is a prime.

It is a super-2 number, since 2×189477369² = 71803346726324322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189477349) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10526512 + ... + 10526529.

Almost surely, 2^189477369 is an apocalyptic number.

It is an amenable number.

189477369 is a deficient number, since it is larger than the sum of its proper divisors (84212177).

189477369 is a wasteful number, since it uses less digits than its factorization.

189477369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21053047 (or 21053044 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 189477369 is about 13765.0778784575. The cubic root of 189477369 is about 574.3621094892.

The spelling of 189477369 in words is "one hundred eighty-nine million, four hundred seventy-seven thousand, three hundred sixty-nine".