40033444 has 24 divisors (see below), whose sum is σ = 77874048. Its totient is φ = 17852640.

The previous prime is 40033439. The next prime is 40033451. The reversal of 40033444 is 44433004.

It is a happy number.

It is a super-2 number, since 2×40033444² = 3205353277002272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 6252 + ... + 10915.

It is an arithmetic number, because the mean of its divisors is an integer number (3244752).

Almost surely, 2^40033444 is an apocalyptic number.

40033444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40033444 is a deficient number, since it is larger than the sum of its proper divisors (37840604).

40033444 is a wasteful number, since it uses less digits than its factorization.

40033444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17235 (or 17233 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 40033444 is about 6327.1987482614. The cubic root of 40033444 is about 342.0904768429.

Adding to 40033444 its reverse (44433004), we get a palindrome (84466448).

It can be divided in two parts, 4003 and 3444, that added together give a palindrome (7447).

The spelling of 40033444 in words is "forty million, thirty-three thousand, four hundred forty-four".