772438133 has 4 divisors (see below), whose sum is σ = 772509408. Its totient is φ = 772366860.

The previous prime is 772438127. The next prime is 772438153. The reversal of 772438133 is 331834277.

772438133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 331834277 = 859 ⋅386303.

It is a cyclic number.

It is not a de Polignac number, because 772438133 - 2⁸ = 772437877 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 (772438123) 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, 15641 + ... + 42302.

It is an arithmetic number, because the mean of its divisors is an integer number (193127352).

Almost surely, 2^772438133 is an apocalyptic number.

It is an amenable number.

772438133 is a deficient number, since it is larger than the sum of its proper divisors (71275).

772438133 is a wasteful number, since it uses less digits than its factorization.

772438133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71274.

The product of its digits is 84672, while the sum is 38.

The square root of 772438133 is about 27792.7712364205. The cubic root of 772438133 is about 917.5320326285.

The spelling of 772438133 in words is "seven hundred seventy-two million, four hundred thirty-eight thousand, one hundred thirty-three".