199048749 has 8 divisors (see below), whose sum is σ = 266656992. Its totient is φ = 132069840.

The previous prime is 199048747. The next prime is 199048757. The reversal of 199048749 is 947840991.

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

It is not a de Polignac number, because 199048749 - 2¹ = 199048747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199048747) 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, 156594 + ... + 157859.

It is an arithmetic number, because the mean of its divisors is an integer number (33332124).

Almost surely, 2^199048749 is an apocalyptic number.

It is an amenable number.

199048749 is a deficient number, since it is larger than the sum of its proper divisors (67608243).

199048749 is a wasteful number, since it uses less digits than its factorization.

199048749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314667.

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 199048749 is about 14108.4637363534. The cubic root of 199048749 is about 583.8749155466.

The spelling of 199048749 in words is "one hundred ninety-nine million, forty-eight thousand, seven hundred forty-nine".