40023029 has 4 divisors (see below), whose sum is σ = 40397184. Its totient is φ = 39648876.

The previous prime is 40023007. The next prime is 40023041. The reversal of 40023029 is 92032004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40023029 - 2²⁴ = 23245813 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 40023029.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40023089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186917 + ... + 187130.

It is an arithmetic number, because the mean of its divisors is an integer number (10099296).

Almost surely, 2^40023029 is an apocalyptic number.

It is an amenable number.

40023029 is a deficient number, since it is larger than the sum of its proper divisors (374155).

40023029 is a wasteful number, since it uses less digits than its factorization.

40023029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374154.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 40023029 is about 6326.3756606765. The cubic root of 40023029 is about 342.0608084709.

The spelling of 40023029 in words is "forty million, twenty-three thousand, twenty-nine".