40400884 has 6 divisors (see below), whose sum is σ = 70701554. Its totient is φ = 20200440.

The previous prime is 40400879. The next prime is 40400887. The reversal of 40400884 is 48800404.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 38787984 + 1612900 = 6228^2 + 1270^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40400887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050107 + ... + 5050114.

Almost surely, 2^40400884 is an apocalyptic number.

It is an amenable number.

40400884 is a deficient number, since it is larger than the sum of its proper divisors (30300670).

40400884 is a wasteful number, since it uses less digits than its factorization.

40400884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10100225 (or 10100223 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 40400884 is about 6356.1689719516. The cubic root of 40400884 is about 343.1338970136.

The spelling of 40400884 in words is "forty million, four hundred thousand, eight hundred eighty-four".