40497 has 4 divisors (see below), whose sum is σ = 54000. Its totient is φ = 26996.

The previous prime is 40493. The next prime is 40499. The reversal of 40497 is 79404.

40497 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 40497 - 2² = 40493 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (40493) 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, 6747 + ... + 6752.

It is an arithmetic number, because the mean of its divisors is an integer number (13500).

2⁴⁰⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

40497 is a deficient number, since it is larger than the sum of its proper divisors (13503).

40497 is a wasteful number, since it uses less digits than its factorization.

40497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13502.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 40497 is about 201.2386642770. The cubic root of 40497 is about 34.3405793192.

The spelling of 40497 in words is "forty thousand, four hundred ninety-seven".