40111923 has 8 divisors (see below), whose sum is σ = 55207936. Its totient is φ = 25878600.

The previous prime is 40111919. The next prime is 40111927. The reversal of 40111923 is 32911104.

It is an interprime number because it is at equal distance from previous prime (40111919) and next prime (40111927).

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

It is not a de Polignac number, because 40111923 - 2² = 40111919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40111923.

It is not an unprimeable number, because it can be changed into a prime (40111927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215563 + ... + 215748.

It is an arithmetic number, because the mean of its divisors is an integer number (6900992).

Almost surely, 2^40111923 is an apocalyptic number.

40111923 is a deficient number, since it is larger than the sum of its proper divisors (15096013).

40111923 is a wasteful number, since it uses less digits than its factorization.

40111923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431345.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 40111923 is about 6333.3974295002. The cubic root of 40111923 is about 342.3138683538.

The spelling of 40111923 in words is "forty million, one hundred eleven thousand, nine hundred twenty-three".