77388241 has 4 divisors (see below), whose sum is σ = 88443712. Its totient is φ = 66332772.

The previous prime is 77388229. The next prime is 77388247. The reversal of 77388241 is 14288377.

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.

It is a cyclic number.

It is not a de Polignac number, because 77388241 - 2⁵ = 77388209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77388194 and 77388203.

It is not an unprimeable number, because it can be changed into a prime (77388247) 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, 5527725 + ... + 5527738.

It is an arithmetic number, because the mean of its divisors is an integer number (22110928).

Almost surely, 2^77388241 is an apocalyptic number.

It is an amenable number.

77388241 is a deficient number, since it is larger than the sum of its proper divisors (11055471).

77388241 is a wasteful number, since it uses less digits than its factorization.

77388241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11055470.

The product of its digits is 75264, while the sum is 40.

The square root of 77388241 is about 8797.0586561646. The cubic root of 77388241 is about 426.1459105491.

The spelling of 77388241 in words is "seventy-seven million, three hundred eighty-eight thousand, two hundred forty-one".