40200444 has 36 divisors (see below), whose sum is σ = 107596944. Its totient is φ = 12611712.

The previous prime is 40200437. The next prime is 40200451. The reversal of 40200444 is 44400204.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40200437) and next prime (40200451).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32232 + ... + 33455.

It is an arithmetic number, because the mean of its divisors is an integer number (2988804).

Almost surely, 2^40200444 is an apocalyptic number.

It is an amenable number.

40200444 is an abundant number, since it is smaller than the sum of its proper divisors (67396500).

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

40200444 is a wasteful number, since it uses less digits than its factorization.

40200444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65714 (or 65709 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 40200444 is about 6340.3820074188. The cubic root of 40200444 is about 342.5654951381.

Adding to 40200444 its reverse (44400204), we get a palindrome (84600648).

The spelling of 40200444 in words is "forty million, two hundred thousand, four hundred forty-four".