40653187 has 2 divisors, whose sum is σ = 40653188. Its totient is φ = 40653186.

The previous prime is 40653161. The next prime is 40653199. The reversal of 40653187 is 78135604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40653187 - 2²³ = 32264579 is a prime.

It is a super-2 number, since 2×40653187² = 3305363226513938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40653287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20326593 + 20326594.

It is an arithmetic number, because the mean of its divisors is an integer number (20326594).

Almost surely, 2^40653187 is an apocalyptic number.

40653187 is a deficient number, since it is larger than the sum of its proper divisors (1).

40653187 is an equidigital number, since it uses as much as digits as its factorization.

40653187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 40653187 is about 6375.9851787783. The cubic root of 40653187 is about 343.8467041644.

The spelling of 40653187 in words is "forty million, six hundred fifty-three thousand, one hundred eighty-seven".