40078413 has 12 divisors (see below), whose sum is σ = 57987228. Its totient is φ = 26674560.

The previous prime is 40078411. The next prime is 40078417. The reversal of 40078413 is 31487004.

It can be written as a sum of positive squares in 2 ways, for example, as 26440164 + 13638249 = 5142^2 + 3693^2 .

It is not a de Polignac number, because 40078413 - 2¹ = 40078411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40078411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2581 + ... + 9317.

It is an arithmetic number, because the mean of its divisors is an integer number (4832269).

Almost surely, 2^40078413 is an apocalyptic number.

It is an amenable number.

40078413 is a deficient number, since it is larger than the sum of its proper divisors (17908815).

40078413 is a wasteful number, since it uses less digits than its factorization.

40078413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7404 (or 7401 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 40078413 is about 6330.7513772063. The cubic root of 40078413 is about 342.2185173735.

The spelling of 40078413 in words is "forty million, seventy-eight thousand, four hundred thirteen".