40446457 has 4 divisors (see below), whose sum is σ = 40464720. Its totient is φ = 40428196.

The previous prime is 40446449. The next prime is 40446467. The reversal of 40446457 is 75464404.

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 40446457 - 2³ = 40446449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40446437) 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, 5263 + ... + 10420.

It is an arithmetic number, because the mean of its divisors is an integer number (10116180).

Almost surely, 2^40446457 is an apocalyptic number.

It is an amenable number.

40446457 is a deficient number, since it is larger than the sum of its proper divisors (18263).

40446457 is a wasteful number, since it uses less digits than its factorization.

40446457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18262.

The product of its (nonzero) digits is 53760, while the sum is 34.

The square root of 40446457 is about 6359.7529040050. The cubic root of 40446457 is about 343.2628691496.

It can be divided in two parts, 4044 and 6457, that added together give a palindrome (10501).

The spelling of 40446457 in words is "forty million, four hundred forty-six thousand, four hundred fifty-seven".