77347394 has 4 divisors (see below), whose sum is σ = 116021094. Its totient is φ = 38673696.

The previous prime is 77347373. The next prime is 77347397. The reversal of 77347394 is 49374377.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 68674369 + 8673025 = 8287^2 + 2945^2 .

It is not an unprimeable number, because it can be changed into a prime (77347397) 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 as a sum of consecutive naturals, namely, 19336847 + ... + 19336850.

Almost surely, 2^77347394 is an apocalyptic number.

77347394 is a deficient number, since it is larger than the sum of its proper divisors (38673700).

77347394 is a wasteful number, since it uses less digits than its factorization.

77347394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38673699.

The product of its digits is 444528, while the sum is 44.

The square root of 77347394 is about 8794.7367214715. The cubic root of 77347394 is about 426.0709213551.

The spelling of 77347394 in words is "seventy-seven million, three hundred forty-seven thousand, three hundred ninety-four".