40597493 has 4 divisors (see below), whose sum is σ = 40759488. Its totient is φ = 40435500.

The previous prime is 40597483. The next prime is 40597499. The reversal of 40597493 is 39479504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40597493 - 2⁶ = 40597429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40597493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40597499) 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, 80621 + ... + 81122.

It is an arithmetic number, because the mean of its divisors is an integer number (10189872).

Almost surely, 2^40597493 is an apocalyptic number.

It is an amenable number.

40597493 is a deficient number, since it is larger than the sum of its proper divisors (161995).

40597493 is a wasteful number, since it uses less digits than its factorization.

40597493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161994.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 40597493 is about 6371.6161999920. The cubic root of 40597493 is about 343.6896115186.

The spelling of 40597493 in words is "forty million, five hundred ninety-seven thousand, four hundred ninety-three".