973748421 has 6 divisors (see below), whose sum is σ = 1406525510. Its totient is φ = 649165608.

The previous prime is 973748417. The next prime is 973748431. The reversal of 973748421 is 124847379.

It can be written as a sum of positive squares in only one way, i.e., 906672321 + 67076100 = 30111^2 + 8190^2 .

It is not a de Polignac number, because 973748421 - 2² = 973748417 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 (973748411) 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 5 ways as a sum of consecutive naturals, for example, 54097126 + ... + 54097143.

Almost surely, 2^973748421 is an apocalyptic number.

It is an amenable number.

973748421 is a deficient number, since it is larger than the sum of its proper divisors (432777089).

973748421 is a wasteful number, since it uses less digits than its factorization.

973748421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108194275 (or 108194272 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 973748421 is about 31204.9422527907. The cubic root of 973748421 is about 991.1717652894.

It can be divided in two parts, 973748 and 421, that added together give a square (974169 = 987²).

The spelling of 973748421 in words is "nine hundred seventy-three million, seven hundred forty-eight thousand, four hundred twenty-one".