40030187 has 2 divisors, whose sum is σ = 40030188. Its totient is φ = 40030186.

The previous prime is 40030183. The next prime is 40030201. The reversal of 40030187 is 78103004.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40030187 - 2² = 40030183 is a prime.

It is not a weakly prime, because it can be changed into another prime (40030181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20015093 + 20015094.

It is an arithmetic number, because the mean of its divisors is an integer number (20015094).

Almost surely, 2^40030187 is an apocalyptic number.

40030187 is a deficient number, since it is larger than the sum of its proper divisors (1).

40030187 is an equidigital number, since it uses as much as digits as its factorization.

40030187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 40030187 is about 6326.9413621433. The cubic root of 40030187 is about 342.0811994422.

The spelling of 40030187 in words is "forty million, thirty thousand, one hundred eighty-seven".