40013345 has 8 divisors (see below), whose sum is σ = 48056064. Its totient is φ = 31983984.

The previous prime is 40013341. The next prime is 40013371. The reversal of 40013345 is 54331004.

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

It is a cyclic number.

It is not a de Polignac number, because 40013345 - 2² = 40013341 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40013341) 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, 5282 + ... + 10388.

It is an arithmetic number, because the mean of its divisors is an integer number (6007008).

Almost surely, 2^40013345 is an apocalyptic number.

It is an amenable number.

40013345 is a deficient number, since it is larger than the sum of its proper divisors (8042719).

40013345 is a wasteful number, since it uses less digits than its factorization.

40013345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6679.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 40013345 is about 6325.6102472410. The cubic root of 40013345 is about 342.0332178216.

Adding to 40013345 its reverse (54331004), we get a palindrome (94344349).

The spelling of 40013345 in words is "forty million, thirteen thousand, three hundred forty-five".