77940103 has 2 divisors, whose sum is σ = 77940104. Its totient is φ = 77940102.

The previous prime is 77940101. The next prime is 77940143. The reversal of 77940103 is 30104977.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77940103 - 2¹ = 77940101 is a prime.

Together with 77940101, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77940101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38970051 + 38970052.

It is an arithmetic number, because the mean of its divisors is an integer number (38970052).

Almost surely, 2^77940103 is an apocalyptic number.

77940103 is a deficient number, since it is larger than the sum of its proper divisors (1).

77940103 is an equidigital number, since it uses as much as digits as its factorization.

77940103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 77940103 is about 8828.3692152062. The cubic root of 77940103 is about 427.1564728823.

The spelling of 77940103 in words is "seventy-seven million, nine hundred forty thousand, one hundred three".