748899191 has 4 divisors (see below), whose sum is σ = 749418192. Its totient is φ = 748380192.

The previous prime is 748899167. The next prime is 748899197. The reversal of 748899191 is 191998847.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 748899191 - 2²² = 744704887 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 (748899197) 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, 257330 + ... + 260223.

It is an arithmetic number, because the mean of its divisors is an integer number (187354548).

Almost surely, 2^748899191 is an apocalyptic number.

748899191 is a deficient number, since it is larger than the sum of its proper divisors (519001).

748899191 is a wasteful number, since it uses less digits than its factorization.

748899191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519000.

The product of its digits is 1306368, while the sum is 56.

The square root of 748899191 is about 27366.0225644868. The cubic root of 748899191 is about 908.1155670502.

The spelling of 748899191 in words is "seven hundred forty-eight million, eight hundred ninety-nine thousand, one hundred ninety-one".