40688446 has 8 divisors (see below), whose sum is σ = 64622880. Its totient is φ = 19147488.

The previous prime is 40688437. The next prime is 40688489. The reversal of 40688446 is 64488604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 40688399 and 40688408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598326 + ... + 598393.

It is an arithmetic number, because the mean of its divisors is an integer number (8077860).

Almost surely, 2^40688446 is an apocalyptic number.

40688446 is a deficient number, since it is larger than the sum of its proper divisors (23934434).

40688446 is a wasteful number, since it uses less digits than its factorization.

40688446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196738.

The product of its (nonzero) digits is 147456, while the sum is 40.

The square root of 40688446 is about 6378.7495639820. The cubic root of 40688446 is about 343.9460829054.

The spelling of 40688446 in words is "forty million, six hundred eighty-eight thousand, four hundred forty-six".