748921 has 2 divisors, whose sum is σ = 748922. Its totient is φ = 748920.

The previous prime is 748889. The next prime is 748933. The reversal of 748921 is 129847.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 440896 + 308025 = 664^2 + 555^2 .

It is a cyclic number.

It is not a de Polignac number, because 748921 - 2⁵ = 748889 is a prime.

It is not a weakly prime, because it can be changed into another prime (748981) 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 as a sum of consecutive naturals, namely, 374460 + 374461.

It is an arithmetic number, because the mean of its divisors is an integer number (374461).

2⁷⁴⁸⁹²¹ is an apocalyptic number.

It is an amenable number.

748921 is a deficient number, since it is larger than the sum of its proper divisors (1).

748921 is an equidigital number, since it uses as much as digits as its factorization.

748921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 31.

The square root of 748921 is about 865.4022186244. The cubic root of 748921 is about 90.8124382166.

The spelling of 748921 in words is "seven hundred forty-eight thousand, nine hundred twenty-one".