77038433 has 4 divisors (see below), whose sum is σ = 78093828. Its totient is φ = 75983040.

The previous prime is 77038417. The next prime is 77038439. The reversal of 77038433 is 33483077.

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 44182609 + 32855824 = 6647^2 + 5732^2 .

It is a cyclic number.

It is not a de Polignac number, because 77038433 - 2⁴ = 77038417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77038393 and 77038402.

It is not an unprimeable number, because it can be changed into a prime (77038439) 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, 527588 + ... + 527733.

It is an arithmetic number, because the mean of its divisors is an integer number (19523457).

Almost surely, 2^77038433 is an apocalyptic number.

77038433 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

77038433 is a deficient number, since it is larger than the sum of its proper divisors (1055395).

77038433 is a wasteful number, since it uses less digits than its factorization.

77038433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055394.

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 77038433 is about 8777.1540376138. The cubic root of 77038433 is about 425.5028566923.

The spelling of 77038433 in words is "seventy-seven million, thirty-eight thousand, four hundred thirty-three".