40887393 has 4 divisors (see below), whose sum is σ = 54516528. Its totient is φ = 27258260.

The previous prime is 40887389. The next prime is 40887421. The reversal of 40887393 is 39378804.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40887393 - 2² = 40887389 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40887313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6814563 + ... + 6814568.

It is an arithmetic number, because the mean of its divisors is an integer number (13629132).

Almost surely, 2^40887393 is an apocalyptic number.

It is an amenable number.

40887393 is a deficient number, since it is larger than the sum of its proper divisors (13629135).

40887393 is a wasteful number, since it uses less digits than its factorization.

40887393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13629134.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 40887393 is about 6394.3250621156. The cubic root of 40887393 is about 344.5057488949.

The spelling of 40887393 in words is "forty million, eight hundred eighty-seven thousand, three hundred ninety-three".