36172949 has 4 divisors (see below), whose sum is σ = 36545964. Its totient is φ = 35799936.

The previous prime is 36172931. The next prime is 36172963. The reversal of 36172949 is 94927163.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9060100 + 27112849 = 3010^2 + 5207^2 .

It is a cyclic number.

It is not a de Polignac number, because 36172949 - 2²⁰ = 35124373 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36172049) 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, 186362 + ... + 186555.

It is an arithmetic number, because the mean of its divisors is an integer number (9136491).

Almost surely, 2^36172949 is an apocalyptic number.

It is an amenable number.

36172949 is a deficient number, since it is larger than the sum of its proper divisors (373015).

36172949 is an equidigital number, since it uses as much as digits as its factorization.

36172949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373014.

The product of its digits is 81648, while the sum is 41.

The square root of 36172949 is about 6014.3951483088. The cubic root of 36172949 is about 330.7206442939.

The spelling of 36172949 in words is "thirty-six million, one hundred seventy-two thousand, nine hundred forty-nine".