36417981 has 4 divisors (see below), whose sum is σ = 48557312. Its totient is φ = 24278652.

The previous prime is 36417977. The next prime is 36418009. The reversal of 36417981 is 18971463.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 36417981 - 2² = 36417977 is a prime.

It is a super-2 number, since 2×36417981² = 2652538680232722, 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 (36417481) 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, 6069661 + ... + 6069666.

It is an arithmetic number, because the mean of its divisors is an integer number (12139328).

Almost surely, 2^36417981 is an apocalyptic number.

It is an amenable number.

36417981 is a deficient number, since it is larger than the sum of its proper divisors (12139331).

36417981 is a wasteful number, since it uses less digits than its factorization.

36417981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12139330.

The product of its digits is 36288, while the sum is 39.

The square root of 36417981 is about 6034.7312284807. The cubic root of 36417981 is about 331.4657208355.

The spelling of 36417981 in words is "thirty-six million, four hundred seventeen thousand, nine hundred eighty-one".