199744401 has 8 divisors (see below), whose sum is σ = 266400640. Its totient is φ = 133125552.

The previous prime is 199744399. The next prime is 199744403. The reversal of 199744401 is 104447991.

It is an interprime number because it is at equal distance from previous prime (199744399) and next prime (199744403).

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

It is not a de Polignac number, because 199744401 - 2¹ = 199744399 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 199744401.

It is not an unprimeable number, because it can be changed into a prime (199744403) 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, 7416 + ... + 21318.

It is an arithmetic number, because the mean of its divisors is an integer number (33300080).

Almost surely, 2^199744401 is an apocalyptic number.

It is an amenable number.

199744401 is a deficient number, since it is larger than the sum of its proper divisors (66656239).

199744401 is a wasteful number, since it uses less digits than its factorization.

199744401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18695.

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

The square root of 199744401 is about 14133.0959453334. The cubic root of 199744401 is about 584.5543161036.

The spelling of 199744401 in words is "one hundred ninety-nine million, seven hundred forty-four thousand, four hundred one".