40037423 has 2 divisors, whose sum is σ = 40037424. Its totient is φ = 40037422.

The previous prime is 40037401. The next prime is 40037449. The reversal of 40037423 is 32473004.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40037423 - 2⁶ = 40037359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40037323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20018711 + 20018712.

It is an arithmetic number, because the mean of its divisors is an integer number (20018712).

Almost surely, 2^40037423 is an apocalyptic number.

40037423 is a deficient number, since it is larger than the sum of its proper divisors (1).

40037423 is an equidigital number, since it uses as much as digits as its factorization.

40037423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 40037423 is about 6327.5131765963. The cubic root of 40037423 is about 342.1018101414.

The spelling of 40037423 in words is "forty million, thirty-seven thousand, four hundred twenty-three".