40403044 has 48 divisors (see below), whose sum is σ = 83865600. Its totient is φ = 16826400.

The previous prime is 40403039. The next prime is 40403057. The reversal of 40403044 is 44030404.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25137 + ... + 26695.

It is an arithmetic number, because the mean of its divisors is an integer number (1747200).

Almost surely, 2^40403044 is an apocalyptic number.

40403044 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40403044 is an abundant number, since it is smaller than the sum of its proper divisors (43462556).

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

40403044 is a wasteful number, since it uses less digits than its factorization.

40403044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624 (or 1622 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 40403044 is about 6356.3388833510. The cubic root of 40403044 is about 343.1400120284.

Adding to 40403044 its reverse (44030404), we get a palindrome (84433448).

The spelling of 40403044 in words is "forty million, four hundred three thousand, forty-four".