40293387 has 6 divisors (see below), whose sum is σ = 58201572. Its totient is φ = 26862252.

The previous prime is 40293377. The next prime is 40293391. The reversal of 40293387 is 78339204.

It is not a de Polignac number, because 40293387 - 2⁸ = 40293131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40293307) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2238513 + ... + 2238530.

It is an arithmetic number, because the mean of its divisors is an integer number (9700262).

Almost surely, 2^40293387 is an apocalyptic number.

40293387 is a deficient number, since it is larger than the sum of its proper divisors (17908185).

40293387 is a wasteful number, since it uses less digits than its factorization.

40293387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4477049 (or 4477046 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 40293387 is about 6347.7072238723. The cubic root of 40293387 is about 342.8292945387.

The spelling of 40293387 in words is "forty million, two hundred ninety-three thousand, three hundred eighty-seven".