40195290 has 16 divisors (see below), whose sum is σ = 96468768. Its totient is φ = 10718736.

The previous prime is 40195277. The next prime is 40195291. The reversal of 40195290 is 9259104.

It is a happy number.

40195290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40195290² = 3231322676368200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1339843 = 40195290 / (4 + 0 + 1 + 9 + 5 + 2 + 9 + 0).

It is not an unprimeable number, because it can be changed into a prime (40195291) 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 7 ways as a sum of consecutive naturals, for example, 669892 + ... + 669951.

It is an arithmetic number, because the mean of its divisors is an integer number (6029298).

Almost surely, 2^40195290 is an apocalyptic number.

40195290 is an abundant number, since it is smaller than the sum of its proper divisors (56273478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40195290 is a wasteful number, since it uses less digits than its factorization.

40195290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339853.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 40195290 is about 6339.9755520033. The cubic root of 40195290 is about 342.5508546861.

The spelling of 40195290 in words is "forty million, one hundred ninety-five thousand, two hundred ninety".