199440741 has 8 divisors (see below), whose sum is σ = 266504704. Its totient is φ = 132668640.

The previous prime is 199440737. The next prime is 199440757. The reversal of 199440741 is 147044991.

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

It is not a de Polignac number, because 199440741 - 2² = 199440737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 199440741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199440721) 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, 71365 + ... + 74106.

It is an arithmetic number, because the mean of its divisors is an integer number (33313088).

Almost surely, 2^199440741 is an apocalyptic number.

It is an amenable number.

199440741 is a deficient number, since it is larger than the sum of its proper divisors (67063963).

199440741 is a wasteful number, since it uses less digits than its factorization.

199440741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145931.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 199440741 is about 14122.3489901645. The cubic root of 199440741 is about 584.2579443581.

The spelling of 199440741 in words is "one hundred ninety-nine million, four hundred forty thousand, seven hundred forty-one".