190247849 has 4 divisors (see below), whose sum is σ = 207543120. Its totient is φ = 172952580.

The previous prime is 190247843. The next prime is 190247857. The reversal of 190247849 is 948742091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190247849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190247843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8647619 + ... + 8647640.

It is an arithmetic number, because the mean of its divisors is an integer number (51885780).

Almost surely, 2^190247849 is an apocalyptic number.

It is an amenable number.

190247849 is a deficient number, since it is larger than the sum of its proper divisors (17295271).

190247849 is a wasteful number, since it uses less digits than its factorization.

190247849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17295270.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 190247849 is about 13793.0362502242. The cubic root of 190247849 is about 575.1395744348.

The spelling of 190247849 in words is "one hundred ninety million, two hundred forty-seven thousand, eight hundred forty-nine".