40400726 has 8 divisors (see below), whose sum is σ = 63790680. Its totient is φ = 19137168.

The previous prime is 40400713. The next prime is 40400743. The reversal of 40400726 is 62700404.

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

It is a super-2 number, since 2×40400726² = 3264437322654152, which contains 22 as substring.

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, 531551 + ... + 531626.

It is an arithmetic number, because the mean of its divisors is an integer number (7973835).

Almost surely, 2^40400726 is an apocalyptic number.

40400726 is a deficient number, since it is larger than the sum of its proper divisors (23389954).

40400726 is a wasteful number, since it uses less digits than its factorization.

40400726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063198.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 40400726 is about 6356.1565430691. The cubic root of 40400726 is about 343.1334497031.

The spelling of 40400726 in words is "forty million, four hundred thousand, seven hundred twenty-six".