40014440 has 32 divisors (see below), whose sum is σ = 90969480. Its totient is φ = 15839232.

The previous prime is 40014421. The next prime is 40014479. The reversal of 40014440 is 4441004.

It can be written as a sum of positive squares in 4 ways, for example, as 29658916 + 10355524 = 5446^2 + 3218^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1277 + ... + 9036.

Almost surely, 2^40014440 is an apocalyptic number.

40014440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40014440 is an abundant number, since it is smaller than the sum of its proper divisors (50955040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40014440 is a wasteful number, since it uses less digits than its factorization.

40014440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10421 (or 10417 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 40014440 is about 6325.6967995629. The cubic root of 40014440 is about 342.0363378053.

Adding to 40014440 its reverse (4441004), we get a palindrome (44455444).

The spelling of 40014440 in words is "forty million, fourteen thousand, four hundred forty".