40046645 has 8 divisors (see below), whose sum is σ = 50882904. Its totient is φ = 30152704.

The previous prime is 40046603. The next prime is 40046681. The reversal of 40046645 is 54664004.

It can be written as a sum of positive squares in 4 ways, for example, as 16144324 + 23902321 = 4018^2 + 4889^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40046645 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235484 + ... + 235653.

It is an arithmetic number, because the mean of its divisors is an integer number (6360363).

Almost surely, 2^40046645 is an apocalyptic number.

It is an amenable number.

40046645 is a deficient number, since it is larger than the sum of its proper divisors (10836259).

40046645 is a wasteful number, since it uses less digits than its factorization.

40046645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471159.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 40046645 is about 6328.2418569457. The cubic root of 40046645 is about 342.1280740754.

The spelling of 40046645 in words is "forty million, forty-six thousand, six hundred forty-five".