49700191 has 4 divisors (see below), whose sum is σ = 49771000. Its totient is φ = 49629384.

The previous prime is 49700179. The next prime is 49700207. The reversal of 49700191 is 19100794.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19100794 = 2 ⋅9550397.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49700191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49700141) 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, 34341 + ... + 35758.

It is an arithmetic number, because the mean of its divisors is an integer number (12442750).

Almost surely, 2^49700191 is an apocalyptic number.

49700191 is a deficient number, since it is larger than the sum of its proper divisors (70809).

49700191 is an equidigital number, since it uses as much as digits as its factorization.

49700191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70808.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 49700191 is about 7049.8362392328. The cubic root of 49700191 is about 367.6653360052.

The spelling of 49700191 in words is "forty-nine million, seven hundred thousand, one hundred ninety-one".