194040899 has 6 divisors (see below), whose sum is σ = 210115476. Its totient is φ = 179114520.

The previous prime is 194040871. The next prime is 194040967. The reversal of 194040899 is 998040491.

It is not a de Polignac number, because 194040899 - 2¹² = 194036803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194040809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 573917 + ... + 574254.

It is an arithmetic number, because the mean of its divisors is an integer number (35019246).

Almost surely, 2^194040899 is an apocalyptic number.

194040899 is a deficient number, since it is larger than the sum of its proper divisors (16074577).

194040899 is a wasteful number, since it uses less digits than its factorization.

194040899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148197 (or 1148184 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 194040899 is about 13929.8563883480. The cubic root of 194040899 is about 578.9367152224.

The spelling of 194040899 in words is "one hundred ninety-four million, forty thousand, eight hundred ninety-nine".