77289983 has 2 divisors, whose sum is σ = 77289984. Its totient is φ = 77289982.

The previous prime is 77289911. The next prime is 77290027. The reversal of 77289983 is 38998277.

It is a strong prime.

It is an emirp because it is prime and its reverse (38998277) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77289983 - 2¹⁶ = 77224447 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77286983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38644991 + 38644992.

It is an arithmetic number, because the mean of its divisors is an integer number (38644992).

Almost surely, 2^77289983 is an apocalyptic number.

77289983 is a deficient number, since it is larger than the sum of its proper divisors (1).

77289983 is an equidigital number, since it uses as much as digits as its factorization.

77289983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 53.

The square root of 77289983 is about 8791.4721747839. The cubic root of 77289983 is about 425.9654784049.

The spelling of 77289983 in words is "seventy-seven million, two hundred eighty-nine thousand, nine hundred eighty-three".