40438446 has 16 divisors (see below), whose sum is σ = 83486208. Its totient is φ = 13044600.

The previous prime is 40438367. The next prime is 40438469. The reversal of 40438446 is 64483404.

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, 108520 + ... + 108891.

It is an arithmetic number, because the mean of its divisors is an integer number (5217888).

Almost surely, 2^40438446 is an apocalyptic number.

40438446 is an abundant number, since it is smaller than the sum of its proper divisors (43047762).

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

40438446 is a wasteful number, since it uses less digits than its factorization.

40438446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217447.

The product of its (nonzero) digits is 36864, while the sum is 33.

The square root of 40438446 is about 6359.1230527487. The cubic root of 40438446 is about 343.2402049443.

The spelling of 40438446 in words is "forty million, four hundred thirty-eight thousand, four hundred forty-six".