40418645 has 8 divisors (see below), whose sum is σ = 48552504. Its totient is φ = 32301504.

The previous prime is 40418633. The next prime is 40418767. The reversal of 40418645 is 54681404.

It can be written as a sum of positive squares in 4 ways, for example, as 552049 + 39866596 = 743^2 + 6314^2 .

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-40418645 is a prime.

It is a Duffinian number.

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, 1967 + ... + 9203.

It is an arithmetic number, because the mean of its divisors is an integer number (6069063).

Almost surely, 2^40418645 is an apocalyptic number.

It is an amenable number.

40418645 is a deficient number, since it is larger than the sum of its proper divisors (8133859).

40418645 is a wasteful number, since it uses less digits than its factorization.

40418645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8359.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 40418645 is about 6357.5659650530. The cubic root of 40418645 is about 343.1841723846.

The spelling of 40418645 in words is "forty million, four hundred eighteen thousand, six hundred forty-five".