40231444 has 12 divisors (see below), whose sum is σ = 76805568. Its totient is φ = 18287000.

The previous prime is 40231427. The next prime is 40231447. The reversal of 40231444 is 44413204.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40231447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 457132 + ... + 457219.

It is an arithmetic number, because the mean of its divisors is an integer number (6400464).

Almost surely, 2^40231444 is an apocalyptic number.

40231444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40231444 is a deficient number, since it is larger than the sum of its proper divisors (36574124).

40231444 is a wasteful number, since it uses less digits than its factorization.

40231444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914366 (or 914364 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 40231444 is about 6342.8261839656. The cubic root of 40231444 is about 342.6535273484.

Adding to 40231444 its reverse (44413204), we get a palindrome (84644648).

The spelling of 40231444 in words is "forty million, two hundred thirty-one thousand, four hundred forty-four".