40186253 has 2 divisors, whose sum is σ = 40186254. Its totient is φ = 40186252.

The previous prime is 40186231. The next prime is 40186271. The reversal of 40186253 is 35268104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26183689 + 14002564 = 5117^2 + 3742^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40186253 is a prime.

It is a super-2 number, since 2×40186253² = 3229869860360018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40116253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20093126 + 20093127.

It is an arithmetic number, because the mean of its divisors is an integer number (20093127).

Almost surely, 2^40186253 is an apocalyptic number.

It is an amenable number.

40186253 is a deficient number, since it is larger than the sum of its proper divisors (1).

40186253 is an equidigital number, since it uses as much as digits as its factorization.

40186253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 40186253 is about 6339.2628120311. The cubic root of 40186253 is about 342.5251811631.

The spelling of 40186253 in words is "forty million, one hundred eighty-six thousand, two hundred fifty-three".