772742479 has 4 divisors (see below), whose sum is σ = 772958584. Its totient is φ = 772526376.

The previous prime is 772742419. The next prime is 772742489. The reversal of 772742479 is 974247277.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 974247277 = 83 ⋅11737919.

It is a cyclic number.

It is not a de Polignac number, because 772742479 - 2⁹ = 772741967 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 (772742419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102597 + ... + 109870.

It is an arithmetic number, because the mean of its divisors is an integer number (193239646).

Almost surely, 2^772742479 is an apocalyptic number.

772742479 is a deficient number, since it is larger than the sum of its proper divisors (216105).

772742479 is a wasteful number, since it uses less digits than its factorization.

772742479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216104.

The product of its digits is 1382976, while the sum is 49.

The square root of 772742479 is about 27798.2459698449. The cubic root of 772742479 is about 917.6525214741.

The spelling of 772742479 in words is "seven hundred seventy-two million, seven hundred forty-two thousand, four hundred seventy-nine".