191679049 has 4 divisors (see below), whose sum is σ = 201767440. Its totient is φ = 181590660.

The previous prime is 191679001. The next prime is 191679073. The reversal of 191679049 is 940976191.

191679049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 940976191 = 59 ⋅15948749.

It is a cyclic number.

It is not a de Polignac number, because 191679049 - 2¹¹ = 191677001 is a prime.

It is a super-3 number, since 3×191679049³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191679349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5044167 + ... + 5044204.

It is an arithmetic number, because the mean of its divisors is an integer number (50441860).

Almost surely, 2^191679049 is an apocalyptic number.

191679049 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

191679049 is a deficient number, since it is larger than the sum of its proper divisors (10088391).

191679049 is a wasteful number, since it uses less digits than its factorization.

191679049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10088390.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 191679049 is about 13844.8202949695. The cubic root of 191679049 is about 576.5781964509.

The spelling of 191679049 in words is "one hundred ninety-one million, six hundred seventy-nine thousand, forty-nine".