36444981 has 4 divisors (see below), whose sum is σ = 48593312. Its totient is φ = 24296652.

The previous prime is 36444979. The next prime is 36445001. The reversal of 36444981 is 18944463.

It is a happy number.

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 36444981 - 2¹ = 36444979 is a prime.

It is a super-2 number, since 2×36444981² = 2656473280180722, 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 (36444971) 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, 6074161 + ... + 6074166.

It is an arithmetic number, because the mean of its divisors is an integer number (12148328).

Almost surely, 2^36444981 is an apocalyptic number.

It is an amenable number.

36444981 is a deficient number, since it is larger than the sum of its proper divisors (12148331).

36444981 is a wasteful number, since it uses less digits than its factorization.

36444981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12148330.

The product of its digits is 82944, while the sum is 39.

The square root of 36444981 is about 6036.9678647480. The cubic root of 36444981 is about 331.5476159453.

The spelling of 36444981 in words is "thirty-six million, four hundred forty-four thousand, nine hundred eighty-one".