40748423 has 2 divisors, whose sum is σ = 40748424. Its totient is φ = 40748422.

The previous prime is 40748399. The next prime is 40748441. The reversal of 40748423 is 32484704.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40748423 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40748423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40748443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20374211 + 20374212.

It is an arithmetic number, because the mean of its divisors is an integer number (20374212).

Almost surely, 2^40748423 is an apocalyptic number.

40748423 is a deficient number, since it is larger than the sum of its proper divisors (1).

40748423 is an equidigital number, since it uses as much as digits as its factorization.

40748423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 40748423 is about 6383.4491460338. The cubic root of 40748423 is about 344.1149983963.

The spelling of 40748423 in words is "forty million, seven hundred forty-eight thousand, four hundred twenty-three".