40195493 has 4 divisors (see below), whose sum is σ = 43287468. Its totient is φ = 37103520.

The previous prime is 40195487. The next prime is 40195501. The reversal of 40195493 is 39459104.

40195493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2765569 + 37429924 = 1663^2 + 6118^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40195493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40195403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1545968 + ... + 1545993.

It is an arithmetic number, because the mean of its divisors is an integer number (10821867).

Almost surely, 2^40195493 is an apocalyptic number.

It is an amenable number.

40195493 is a deficient number, since it is larger than the sum of its proper divisors (3091975).

40195493 is a wasteful number, since it uses less digits than its factorization.

40195493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3091974.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 40195493 is about 6339.9915615086. The cubic root of 40195493 is about 342.5514313515.

The spelling of 40195493 in words is "forty million, one hundred ninety-five thousand, four hundred ninety-three".