40418897 has 4 divisors (see below), whose sum is σ = 40446960. Its totient is φ = 40390836.

The previous prime is 40418891. The next prime is 40418899. The reversal of 40418897 is 79881404.

It is a happy number.

40418897 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, 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 40418897 - 2⁴ = 40418881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40418891) 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, 11747 + ... + 14792.

It is an arithmetic number, because the mean of its divisors is an integer number (10111740).

Almost surely, 2^40418897 is an apocalyptic number.

It is an amenable number.

40418897 is a deficient number, since it is larger than the sum of its proper divisors (28063).

40418897 is a wasteful number, since it uses less digits than its factorization.

40418897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28062.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 40418897 is about 6357.5857839277. The cubic root of 40418897 is about 343.1848856052.

The spelling of 40418897 in words is "forty million, four hundred eighteen thousand, eight hundred ninety-seven".