40099023 has 16 divisors (see below), whose sum is σ = 59637600. Its totient is φ = 26628480.

The previous prime is 40099001. The next prime is 40099049. The reversal of 40099023 is 32099004.

It is not a de Polignac number, because 40099023 - 2⁵ = 40098991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40099123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4503 + ... + 10023.

It is an arithmetic number, because the mean of its divisors is an integer number (3727350).

Almost surely, 2^40099023 is an apocalyptic number.

40099023 is a deficient number, since it is larger than the sum of its proper divisors (19538577).

40099023 is a wasteful number, since it uses less digits than its factorization.

40099023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5799 (or 5793 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 40099023 is about 6332.3789368609. The cubic root of 40099023 is about 342.2771683567.

The spelling of 40099023 in words is "forty million, ninety-nine thousand, twenty-three".