78433433 has 4 divisors (see below), whose sum is σ = 84466788. Its totient is φ = 72400080.

The previous prime is 78433417. The next prime is 78433447. The reversal of 78433433 is 33433487.

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 16386304 + 62047129 = 4048^2 + 7877^2 .

It is a cyclic number.

It is not a de Polignac number, because 78433433 - 2⁴ = 78433417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78433393 and 78433402.

It is not an unprimeable number, because it can be changed into a prime (78433403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3016658 + ... + 3016683.

It is an arithmetic number, because the mean of its divisors is an integer number (21116697).

Almost surely, 2^78433433 is an apocalyptic number.

It is an amenable number.

78433433 is a deficient number, since it is larger than the sum of its proper divisors (6033355).

78433433 is a wasteful number, since it uses less digits than its factorization.

78433433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6033354.

The product of its digits is 72576, while the sum is 35.

The square root of 78433433 is about 8856.2651834732. The cubic root of 78433433 is about 428.0558218308.

The spelling of 78433433 in words is "seventy-eight million, four hundred thirty-three thousand, four hundred thirty-three".