36939881 has 16 divisors (see below), whose sum is σ = 42672960. Its totient is φ = 31657920.

The previous prime is 36939871. The next prime is 36939883. The reversal of 36939881 is 18893963.

It is a cyclic number.

It is not a de Polignac number, because 36939881 - 2¹⁰ = 36938857 is a prime.

It is a super-2 number, since 2×36939881² = 2729109616588322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (36939883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12371 + ... + 15063.

It is an arithmetic number, because the mean of its divisors is an integer number (2667060).

Almost surely, 2^36939881 is an apocalyptic number.

It is an amenable number.

36939881 is a deficient number, since it is larger than the sum of its proper divisors (5733079).

36939881 is a wasteful number, since it uses less digits than its factorization.

36939881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776.

The product of its digits is 279936, while the sum is 47.

The square root of 36939881 is about 6077.8187699207. The cubic root of 36939881 is about 333.0416099892.

The spelling of 36939881 in words is "thirty-six million, nine hundred thirty-nine thousand, eight hundred eighty-one".