40444939 has 6 divisors (see below), whose sum is σ = 42602820. Its totient is φ = 38289996.

The previous prime is 40444931. The next prime is 40444949. The reversal of 40444939 is 93944404.

It is not a de Polignac number, because 40444939 - 2³ = 40444931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40444898 and 40444907.

It is not an unprimeable number, because it can be changed into a prime (40444931) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26992 + ... + 28450.

It is an arithmetic number, because the mean of its divisors is an integer number (7100470).

Almost surely, 2^40444939 is an apocalyptic number.

40444939 is a deficient number, since it is larger than the sum of its proper divisors (2157881).

40444939 is an frugal number, since it uses more digits than its factorization.

40444939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2937 (or 1478 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 40444939 is about 6359.6335586258. The cubic root of 40444939 is about 343.2585747516.

The spelling of 40444939 in words is "forty million, four hundred forty-four thousand, nine hundred thirty-nine".