40451189 has 2 divisors, whose sum is σ = 40451190. Its totient is φ = 40451188.

The previous prime is 40451153. The next prime is 40451219. The reversal of 40451189 is 98115404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23600164 + 16851025 = 4858^2 + 4105^2 .

It is a cyclic number.

It is not a de Polignac number, because 40451189 - 2²⁰ = 39402613 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40451689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20225594 + 20225595.

It is an arithmetic number, because the mean of its divisors is an integer number (20225595).

Almost surely, 2^40451189 is an apocalyptic number.

It is an amenable number.

40451189 is a deficient number, since it is larger than the sum of its proper divisors (1).

40451189 is an equidigital number, since it uses as much as digits as its factorization.

40451189 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 32.

The square root of 40451189 is about 6360.1249201568. The cubic root of 40451189 is about 343.2762552133.

The spelling of 40451189 in words is "forty million, four hundred fifty-one thousand, one hundred eighty-nine".