44064981 has 24 divisors (see below), whose sum is σ = 67248896. Its totient is φ = 27760320.

The previous prime is 44064961. The next prime is 44064983. The reversal of 44064981 is 18946044.

It is a happy number.

44064981 is a `hidden beast` number, since 4 + 4 + 0 + 649 + 8 + 1 = 666.

It is not a de Polignac number, because 44064981 - 2¹¹ = 44062933 is a prime.

It is a super-2 number, since 2×44064981² = 3883445101060722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44064983) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10161 + ... + 13833.

Almost surely, 2^44064981 is an apocalyptic number.

It is an amenable number.

44064981 is a deficient number, since it is larger than the sum of its proper divisors (23183915).

44064981 is a wasteful number, since it uses less digits than its factorization.

44064981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3753 (or 3750 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 44064981 is about 6638.1459007768. The cubic root of 44064981 is about 353.2085401431.

The spelling of 44064981 in words is "forty-four million, sixty-four thousand, nine hundred eighty-one".