77742383 has 4 divisors (see below), whose sum is σ = 77807688. Its totient is φ = 77677080.

The previous prime is 77742367. The next prime is 77742391. The reversal of 77742383 is 38324777.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38324777 = 53 ⋅723109.

It is a cyclic number.

It is not a de Polignac number, because 77742383 - 2⁴ = 77742367 is a prime.

It is a super-2 number, since 2×77742383² = 12087756229037378, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77742383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77792383) 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, 30833 + ... + 33258.

It is an arithmetic number, because the mean of its divisors is an integer number (19451922).

Almost surely, 2^77742383 is an apocalyptic number.

77742383 is a deficient number, since it is larger than the sum of its proper divisors (65305).

77742383 is a wasteful number, since it uses less digits than its factorization.

77742383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65304.

The product of its digits is 197568, while the sum is 41.

The square root of 77742383 is about 8817.1641132509. The cubic root of 77742383 is about 426.7949606735.

It can be divided in two parts, 77742 and 383, that added together give a 7-th power (78125 = 5⁷).

The spelling of 77742383 in words is "seventy-seven million, seven hundred forty-two thousand, three hundred eighty-three".