748391 has 16 divisors (see below), whose sum is σ = 956160. Its totient is φ = 570240.

The previous prime is 748387. The next prime is 748441. The reversal of 748391 is 193847.

It is a cyclic number.

It is not a de Polignac number, because 748391 - 2² = 748387 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (748301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2096 + ... + 2426.

It is an arithmetic number, because the mean of its divisors is an integer number (59760).

2⁷⁴⁸³⁹¹ is an apocalyptic number.

748391 is a deficient number, since it is larger than the sum of its proper divisors (207769).

748391 is a wasteful number, since it uses less digits than its factorization.

748391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374.

The product of its digits is 6048, while the sum is 32.

The square root of 748391 is about 865.0959484358. The cubic root of 748391 is about 90.7910109675.

The spelling of 748391 in words is "seven hundred forty-eight thousand, three hundred ninety-one".