748301921 has 4 divisors (see below), whose sum is σ = 748723392. Its totient is φ = 747880452.

The previous prime is 748301891. The next prime is 748301923. The reversal of 748301921 is 129103847.

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: 129103847 = 3761 ⋅34327.

It is a cyclic number.

It is not a de Polignac number, because 748301921 - 2¹⁰ = 748300897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (748301923) 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, 208061 + ... + 211626.

It is an arithmetic number, because the mean of its divisors is an integer number (187180848).

Almost surely, 2^748301921 is an apocalyptic number.

It is an amenable number.

748301921 is a deficient number, since it is larger than the sum of its proper divisors (421471).

748301921 is a wasteful number, since it uses less digits than its factorization.

748301921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421470.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 748301921 is about 27355.1077680202. The cubic root of 748301921 is about 907.8740862002.

The spelling of 748301921 in words is "seven hundred forty-eight million, three hundred one thousand, nine hundred twenty-one".