772973843 has 4 divisors (see below), whose sum is σ = 773119128. Its totient is φ = 772828560.

The previous prime is 772973837. The next prime is 772973849. The reversal of 772973843 is 348379277.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (772973837) and next prime (772973849).

It is a cyclic number.

It is not a de Polignac number, because 772973843 - 2²⁸ = 504538387 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 772973791 and 772973800.

It is not an unprimeable number, because it can be changed into a prime (772973849) 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 3 ways as a sum of consecutive naturals, for example, 64346 + ... + 75407.

It is an arithmetic number, because the mean of its divisors is an integer number (193279782).

Almost surely, 2^772973843 is an apocalyptic number.

772973843 is a deficient number, since it is larger than the sum of its proper divisors (145285).

772973843 is a wasteful number, since it uses less digits than its factorization.

772973843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145284.

The product of its digits is 1778112, while the sum is 50.

The square root of 772973843 is about 27802.4071439867. The cubic root of 772973843 is about 917.7440959974.

The spelling of 772973843 in words is "seven hundred seventy-two million, nine hundred seventy-three thousand, eight hundred forty-three".