40488444 has 24 divisors (see below), whose sum is σ = 104970320. Its totient is φ = 13496112.

The previous prime is 40488439. The next prime is 40488457. The reversal of 40488444 is 44488404.

It is a happy number.

It is a super-2 number, since 2×40488444² = 3278628195082272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 40488399 and 40488408.

It is a congruent number.

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, 187339 + ... + 187554.

Almost surely, 2^40488444 is an apocalyptic number.

It is an amenable number.

40488444 is an abundant number, since it is smaller than the sum of its proper divisors (64481876).

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

40488444 is a wasteful number, since it uses less digits than its factorization.

40488444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374906 (or 374898 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 36.

The square root of 40488444 is about 6363.0530407973. The cubic root of 40488444 is about 343.3816071459.

The spelling of 40488444 in words is "forty million, four hundred eighty-eight thousand, four hundred forty-four".