121763839 has 2 divisors, whose sum is σ = 121763840. Its totient is φ = 121763838.

The previous prime is 121763827. The next prime is 121763849. The reversal of 121763839 is 938367121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121763839 - 2⁷ = 121763711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121763849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60881919 + 60881920.

It is an arithmetic number, because the mean of its divisors is an integer number (60881920).

Almost surely, 2^121763839 is an apocalyptic number.

121763839 is a deficient number, since it is larger than the sum of its proper divisors (1).

121763839 is an equidigital number, since it uses as much as digits as its factorization.

121763839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 121763839 is about 11034.6653324874. The cubic root of 121763839 is about 495.6473372732.

It can be divided in two parts, 1217 and 63839, that added together give a palindrome (65056).

The spelling of 121763839 in words is "one hundred twenty-one million, seven hundred sixty-three thousand, eight hundred thirty-nine".