40997423 has 4 divisors (see below), whose sum is σ = 41054088. Its totient is φ = 40940760.

The previous prime is 40997419. The next prime is 40997449. The reversal of 40997423 is 32479904.

40997423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40997423 - 2² = 40997419 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 (40997413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27233 + ... + 28698.

It is an arithmetic number, because the mean of its divisors is an integer number (10263522).

Almost surely, 2^40997423 is an apocalyptic number.

40997423 is a deficient number, since it is larger than the sum of its proper divisors (56665).

40997423 is an equidigital number, since it uses as much as digits as its factorization.

40997423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56664.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 40997423 is about 6402.9230043785. The cubic root of 40997423 is about 344.8144994513.

The spelling of 40997423 in words is "forty million, nine hundred ninety-seven thousand, four hundred twenty-three".