40435023 has 4 divisors (see below), whose sum is σ = 53913368. Its totient is φ = 26956680.

The previous prime is 40434991. The next prime is 40435033. The reversal of 40435023 is 32053404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40435023 - 2⁵ = 40434991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40435033) 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, 6739168 + ... + 6739173.

It is an arithmetic number, because the mean of its divisors is an integer number (13478342).

Almost surely, 2^40435023 is an apocalyptic number.

40435023 is a deficient number, since it is larger than the sum of its proper divisors (13478345).

40435023 is a wasteful number, since it uses less digits than its factorization.

40435023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13478344.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 40435023 is about 6358.8539061689. The cubic root of 40435023 is about 343.2305199004.

Adding to 40435023 its reverse (32053404), we get a palindrome (72488427).

The spelling of 40435023 in words is "forty million, four hundred thirty-five thousand, twenty-three".