136492489 has 9 divisors (see below), whose sum is σ = 158872167. Its totient is φ = 116923464.

The previous prime is 136492469. The next prime is 136492537. The reversal of 136492489 is 984294631.

The square root of 136492489 is 11683.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 72812089 + 63680400 = 8533^2 + 7980^2 .

It is not a de Polignac number, because 136492489 - 2⁵ = 136492457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136492469) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 80947 + ... + 82615.

It is an arithmetic number, because the mean of its divisors is an integer number (17652463).

Almost surely, 2^136492489 is an apocalyptic number.

136492489 is the 11683-rd square number.

136492489 is the 5842-nd centered octagonal number.

It is an amenable number.

136492489 is a deficient number, since it is larger than the sum of its proper divisors (22379678).

136492489 is an frugal number, since it uses more digits than its factorization.

136492489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3352 (or 1676 counting only the distinct ones).

The product of its digits is 373248, while the sum is 46.

The cubic root of 136492489 is about 514.8763193115.

The spelling of 136492489 in words is "one hundred thirty-six million, four hundred ninety-two thousand, four hundred eighty-nine".