40022187 has 4 divisors (see below), whose sum is σ = 53362920. Its totient is φ = 26681456.

The previous prime is 40022153. The next prime is 40022219. The reversal of 40022187 is 78122004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40022187 - 2⁸ = 40021931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40022107) 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, 6670362 + ... + 6670367.

It is an arithmetic number, because the mean of its divisors is an integer number (13340730).

Almost surely, 2^40022187 is an apocalyptic number.

40022187 is a deficient number, since it is larger than the sum of its proper divisors (13340733).

40022187 is a wasteful number, since it uses less digits than its factorization.

40022187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13340732.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 40022187 is about 6326.3091135353. The cubic root of 40022187 is about 342.0584097084.

The spelling of 40022187 in words is "forty million, twenty-two thousand, one hundred eighty-seven".