40685404 has 6 divisors (see below), whose sum is σ = 71199464. Its totient is φ = 20342700.

The previous prime is 40685401. The next prime is 40685431. The reversal of 40685404 is 40458604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40685401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5085672 + ... + 5085679.

Almost surely, 2^40685404 is an apocalyptic number.

It is an amenable number.

40685404 is a deficient number, since it is larger than the sum of its proper divisors (30514060).

40685404 is a wasteful number, since it uses less digits than its factorization.

40685404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10171355 (or 10171353 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 40685404 is about 6378.5111115369. The cubic root of 40685404 is about 343.9375111841.

The spelling of 40685404 in words is "forty million, six hundred eighty-five thousand, four hundred four".