40367987 has 8 divisors (see below), whose sum is σ = 44121792. Its totient is φ = 36628200.

The previous prime is 40367981. The next prime is 40368001. The reversal of 40367987 is 78976304.

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 40367987 - 2²⁴ = 23590771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40367981) 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, 3068 + ... + 9494.

It is an arithmetic number, because the mean of its divisors is an integer number (5515224).

Almost surely, 2^40367987 is an apocalyptic number.

40367987 is a deficient number, since it is larger than the sum of its proper divisors (3753805).

40367987 is a wasteful number, since it uses less digits than its factorization.

40367987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7009.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 40367987 is about 6353.5806440148. The cubic root of 40367987 is about 343.0407378225.

The spelling of 40367987 in words is "forty million, three hundred sixty-seven thousand, nine hundred eighty-seven".