77434433 has 4 divisors (see below), whose sum is σ = 77654148. Its totient is φ = 77214720.

The previous prime is 77434429. The next prime is 77434447. The reversal of 77434433 is 33443477.

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

It can be written as a sum of positive squares in 2 ways, for example, as 55606849 + 21827584 = 7457^2 + 4672^2 .

It is a cyclic number.

It is not a de Polignac number, because 77434433 - 2² = 77434429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77434393 and 77434402.

It is not an unprimeable number, because it can be changed into a prime (77434463) 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, 109328 + ... + 110033.

It is an arithmetic number, because the mean of its divisors is an integer number (19413537).

Almost surely, 2^77434433 is an apocalyptic number.

It is an amenable number.

77434433 is a deficient number, since it is larger than the sum of its proper divisors (219715).

77434433 is a wasteful number, since it uses less digits than its factorization.

77434433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219714.

The product of its digits is 84672, while the sum is 35.

The square root of 77434433 is about 8799.6836874970. The cubic root of 77434433 is about 426.2306806057.

The spelling of 77434433 in words is "seventy-seven million, four hundred thirty-four thousand, four hundred thirty-three".