78333383 has 2 divisors, whose sum is σ = 78333384. Its totient is φ = 78333382.

The previous prime is 78333347. The next prime is 78333391. The reversal of 78333383 is 38333387.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78333383 - 2¹⁴ = 78316999 is a prime.

It is a super-2 number, since 2×78333383² = 12272237784449378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78333313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39166691 + 39166692.

It is an arithmetic number, because the mean of its divisors is an integer number (39166692).

Almost surely, 2^78333383 is an apocalyptic number.

78333383 is a deficient number, since it is larger than the sum of its proper divisors (1).

78333383 is an equidigital number, since it uses as much as digits as its factorization.

78333383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 38.

The square root of 78333383 is about 8850.6148373997. The cubic root of 78333383 is about 427.8737344805.

The spelling of 78333383 in words is "seventy-eight million, three hundred thirty-three thousand, three hundred eighty-three".