44402440 has 16 divisors (see below), whose sum is σ = 99905580. Its totient is φ = 17760960.

The previous prime is 44402431. The next prime is 44402459. The reversal of 44402440 is 4420444.

It can be written as a sum of positive squares in 2 ways, for example, as 42536484 + 1865956 = 6522^2 + 1366^2 .

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, 554991 + ... + 555070.

Almost surely, 2^44402440 is an apocalyptic number.

44402440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44402440 is an abundant number, since it is smaller than the sum of its proper divisors (55503140).

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

44402440 is a wasteful number, since it uses less digits than its factorization.

44402440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110072 (or 1110068 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 44402440 is about 6663.5155886364. The cubic root of 44402440 is about 354.1078969304.

Adding to 44402440 its reverse (4420444), we get a palindrome (48822884).

The spelling of 44402440 in words is "forty-four million, four hundred two thousand, four hundred forty".