40402244 has 12 divisors (see below), whose sum is σ = 71179500. Its totient is φ = 20065248.

The previous prime is 40402177. The next prime is 40402253. The reversal of 40402244 is 44220404.

It can be written as a sum of positive squares in 2 ways, for example, as 21808900 + 18593344 = 4670^2 + 4312^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33299 + ... + 34490.

It is an arithmetic number, because the mean of its divisors is an integer number (5931625).

Almost surely, 2^40402244 is an apocalyptic number.

It is an amenable number.

40402244 is a deficient number, since it is larger than the sum of its proper divisors (30777256).

40402244 is a wasteful number, since it uses less digits than its factorization.

40402244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67942 (or 67940 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 40402244 is about 6356.2759537327. The cubic root of 40402244 is about 343.1377472335.

Adding to 40402244 its reverse (44220404), we get a palindrome (84622648).

The spelling of 40402244 in words is "forty million, four hundred two thousand, two hundred forty-four".