77343739 has 8 divisors (see below), whose sum is σ = 84480768. Its totient is φ = 70224360.

The previous prime is 77343697. The next prime is 77343757. The reversal of 77343739 is 93734377.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77343739 - 2¹⁵ = 77310971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77343695 and 77343704.

It is not an unprimeable number, because it can be changed into a prime (77343439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5794 + ... + 13720.

It is an arithmetic number, because the mean of its divisors is an integer number (10560096).

Almost surely, 2^77343739 is an apocalyptic number.

77343739 is a deficient number, since it is larger than the sum of its proper divisors (7137029).

77343739 is a wasteful number, since it uses less digits than its factorization.

77343739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8825.

The product of its digits is 333396, while the sum is 43.

The square root of 77343739 is about 8794.5289242801. The cubic root of 77343739 is about 426.0642100161.

The spelling of 77343739 in words is "seventy-seven million, three hundred forty-three thousand, seven hundred thirty-nine".