40403156 has 12 divisors (see below), whose sum is σ = 70884660. Its totient is φ = 20150400.

The previous prime is 40403147. The next prime is 40403173. The reversal of 40403156 is 65130404.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39564100 + 839056 = 6290^2 + 916^2 .

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, 10991 + ... + 14198.

It is an arithmetic number, because the mean of its divisors is an integer number (5907055).

Almost surely, 2^40403156 is an apocalyptic number.

It is an amenable number.

40403156 is a deficient number, since it is larger than the sum of its proper divisors (30481504).

40403156 is a wasteful number, since it uses less digits than its factorization.

40403156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25594 (or 25592 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 40403156 is about 6356.3476934479. The cubic root of 40403156 is about 343.1403290973.

The spelling of 40403156 in words is "forty million, four hundred three thousand, one hundred fifty-six".