747973 has 4 divisors (see below), whose sum is σ = 787360. Its totient is φ = 708588.

The previous prime is 747953. The next prime is 747977. The reversal of 747973 is 379747.

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: 379747 = 401 ⋅947.

It is a 6-Lehmer number, since φ(747973) divides (747973-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 747973 - 2⁵ = 747941 is a prime.

It is an Ulam number.

747973 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19665 + ... + 19702.

It is an arithmetic number, because the mean of its divisors is an integer number (196840).

2⁷⁴⁷⁹⁷³ is an apocalyptic number.

It is an amenable number.

747973 is a deficient number, since it is larger than the sum of its proper divisors (39387).

747973 is a wasteful number, since it uses less digits than its factorization.

747973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39386.

The product of its digits is 37044, while the sum is 37.

The square root of 747973 is about 864.8543229932. The cubic root of 747973 is about 90.7741046043.

The spelling of 747973 in words is "seven hundred forty-seven thousand, nine hundred seventy-three".