40655023 has 4 divisors (see below), whose sum is σ = 40675608. Its totient is φ = 40634440.

The previous prime is 40655011. The next prime is 40655063. The reversal of 40655023 is 32055604.

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

It is a cyclic number.

It is not a de Polignac number, because 40655023 - 2⁹ = 40654511 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 (40655063) 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, 6973 + ... + 11398.

It is an arithmetic number, because the mean of its divisors is an integer number (10168902).

Almost surely, 2^40655023 is an apocalyptic number.

40655023 is a deficient number, since it is larger than the sum of its proper divisors (20585).

40655023 is a wasteful number, since it uses less digits than its factorization.

40655023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20584.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 40655023 is about 6376.1291549027. The cubic root of 40655023 is about 343.8518804133.

It can be divided in two parts, 406550 and 23, that multiplied together give a triangular number (9350650 = T₄₃₂₄).

The spelling of 40655023 in words is "forty million, six hundred fifty-five thousand, twenty-three".