40097443 has 2 divisors, whose sum is σ = 40097444. Its totient is φ = 40097442.

The previous prime is 40097417. The next prime is 40097479. The reversal of 40097443 is 34479004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40097443 - 2⁵ = 40097411 is a prime.

It is not a weakly prime, because it can be changed into another prime (40097413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20048721 + 20048722.

It is an arithmetic number, because the mean of its divisors is an integer number (20048722).

Almost surely, 2^40097443 is an apocalyptic number.

40097443 is a deficient number, since it is larger than the sum of its proper divisors (1).

40097443 is an equidigital number, since it uses as much as digits as its factorization.

40097443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 40097443 is about 6332.2541799899. The cubic root of 40097443 is about 342.2726727773.

The spelling of 40097443 in words is "forty million, ninety-seven thousand, four hundred forty-three".