40488997 has 4 divisors (see below), whose sum is σ = 40807936. Its totient is φ = 40170060.

The previous prime is 40488961. The next prime is 40489003. The reversal of 40488997 is 79988404.

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 40488997 - 2¹¹ = 40486949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40488997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40488797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159279 + ... + 159532.

It is an arithmetic number, because the mean of its divisors is an integer number (10201984).

Almost surely, 2^40488997 is an apocalyptic number.

It is an amenable number.

40488997 is a deficient number, since it is larger than the sum of its proper divisors (318939).

40488997 is a wasteful number, since it uses less digits than its factorization.

40488997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318938.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 40488997 is about 6363.0964946322. The cubic root of 40488997 is about 343.3831704657.

It can be divided in two parts, 404 and 88997, that added together give a square (89401 = 299²).

The spelling of 40488997 in words is "forty million, four hundred eighty-eight thousand, nine hundred ninety-seven".