40195769 has 8 divisors (see below), whose sum is σ = 44028360. Its totient is φ = 36526336.

The previous prime is 40195751. The next prime is 40195777. The reversal of 40195769 is 96759104.

It can be written as a sum of positive squares in 4 ways, for example, as 21160000 + 19035769 = 4600^2 + 4363^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40195769 - 2¹² = 40191673 is a prime.

It is a super-2 number, since 2×40195769² = 3231399691002722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40195709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40274 + ... + 41259.

It is an arithmetic number, because the mean of its divisors is an integer number (5503545).

Almost surely, 2^40195769 is an apocalyptic number.

It is an amenable number.

40195769 is a deficient number, since it is larger than the sum of its proper divisors (3832591).

40195769 is a wasteful number, since it uses less digits than its factorization.

40195769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81579.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 40195769 is about 6340.0133280617. The cubic root of 40195769 is about 342.5522153862.

The spelling of 40195769 in words is "forty million, one hundred ninety-five thousand, seven hundred sixty-nine".