40423623 has 8 divisors (see below), whose sum is σ = 54054000. Its totient is φ = 26871168.

The previous prime is 40423609. The next prime is 40423633. The reversal of 40423623 is 32632404.

It is a happy number.

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

It is not a de Polignac number, because 40423623 - 2⁸ = 40423367 is a prime.

It is a super-2 number, since 2×40423623² = 3268138592892258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40423593 and 40423602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40423633) 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, 18258 + ... + 20351.

It is an arithmetic number, because the mean of its divisors is an integer number (6756750).

Almost surely, 2^40423623 is an apocalyptic number.

40423623 is a deficient number, since it is larger than the sum of its proper divisors (13630377).

40423623 is a wasteful number, since it uses less digits than its factorization.

40423623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38961.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 40423623 is about 6357.9574550322. The cubic root of 40423623 is about 343.1982607728.

The spelling of 40423623 in words is "forty million, four hundred twenty-three thousand, six hundred twenty-three".