40455645 has 8 divisors (see below), whose sum is σ = 64729056. Its totient is φ = 21576336.

The previous prime is 40455641. The next prime is 40455659. The reversal of 40455645 is 54655404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40455645 - 2² = 40455641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40455641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1348507 + ... + 1348536.

It is an arithmetic number, because the mean of its divisors is an integer number (8091132).

Almost surely, 2^40455645 is an apocalyptic number.

It is an amenable number.

40455645 is a deficient number, since it is larger than the sum of its proper divisors (24273411).

40455645 is a wasteful number, since it uses less digits than its factorization.

40455645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2697051.

The product of its (nonzero) digits is 48000, while the sum is 33.

The square root of 40455645 is about 6360.4752180949. The cubic root of 40455645 is about 343.2888595633.

The spelling of 40455645 in words is "forty million, four hundred fifty-five thousand, six hundred forty-five".