40194505 has 8 divisors (see below), whose sum is σ = 51943752. Its totient is φ = 29682048.

The previous prime is 40194499. The next prime is 40194523. The reversal of 40194505 is 50549104.

It can be written as a sum of positive squares in 4 ways, for example, as 7338681 + 32855824 = 2709^2 + 5732^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 40194505 - 2¹¹ = 40192457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309124 + ... + 309253.

It is an arithmetic number, because the mean of its divisors is an integer number (6492969).

Almost surely, 2^40194505 is an apocalyptic number.

It is an amenable number.

40194505 is a deficient number, since it is larger than the sum of its proper divisors (11749247).

40194505 is a wasteful number, since it uses less digits than its factorization.

40194505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618395.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 40194505 is about 6339.9136429450. The cubic root of 40194505 is about 342.5486247053.

The spelling of 40194505 in words is "forty million, one hundred ninety-four thousand, five hundred five".