77744338 has 16 divisors (see below), whose sum is σ = 133508160. Its totient is φ = 33260976.

The previous prime is 77744279. The next prime is 77744353. The reversal of 77744338 is 83344777.

It is a junction number, because it is equal to n+sod(n) for n = 77744294 and 77744303.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4053 + ... + 13111.

It is an arithmetic number, because the mean of its divisors is an integer number (8344260).

Almost surely, 2^77744338 is an apocalyptic number.

77744338 is a deficient number, since it is larger than the sum of its proper divisors (55763822).

77744338 is a wasteful number, since it uses less digits than its factorization.

77744338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9681.

The product of its digits is 395136, while the sum is 43.

The square root of 77744338 is about 8817.2749758641. The cubic root of 77744338 is about 426.7985382037.

The spelling of 77744338 in words is "seventy-seven million, seven hundred forty-four thousand, three hundred thirty-eight".