68899429 has 2 divisors, whose sum is σ = 68899430. Its totient is φ = 68899428.

The previous prime is 68899409. The next prime is 68899451. The reversal of 68899429 is 92499886.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64160100 + 4739329 = 8010^2 + 2177^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68899429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68899429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68899409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34449714 + 34449715.

It is an arithmetic number, because the mean of its divisors is an integer number (34449715).

Almost surely, 2^68899429 is an apocalyptic number.

It is an amenable number.

68899429 is a deficient number, since it is larger than the sum of its proper divisors (1).

68899429 is an equidigital number, since it uses as much as digits as its factorization.

68899429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2239488, while the sum is 55.

The square root of 68899429 is about 8300.5679926135. The cubic root of 68899429 is about 409.9572213943.

The spelling of 68899429 in words is "sixty-eight million, eight hundred ninety-nine thousand, four hundred twenty-nine".