78413429 has 2 divisors, whose sum is σ = 78413430. Its totient is φ = 78413428.

The previous prime is 78413411. The next prime is 78413441. The reversal of 78413429 is 92431487.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45900625 + 32512804 = 6775^2 + 5702^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78413429 is a prime.

It is a super-2 number, since 2×78413429² = 12297331695076082, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 78413392 and 78413401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78413449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39206714 + 39206715.

It is an arithmetic number, because the mean of its divisors is an integer number (39206715).

Almost surely, 2^78413429 is an apocalyptic number.

It is an amenable number.

78413429 is a deficient number, since it is larger than the sum of its proper divisors (1).

78413429 is an equidigital number, since it uses as much as digits as its factorization.

78413429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 38.

The square root of 78413429 is about 8855.1357414779. The cubic root of 78413429 is about 428.0194276708.

The spelling of 78413429 in words is "seventy-eight million, four hundred thirteen thousand, four hundred twenty-nine".