134020399 has 2 divisors, whose sum is σ = 134020400. Its totient is φ = 134020398.

The previous prime is 134020391. The next prime is 134020417. The reversal of 134020399 is 993020431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 134020399 - 2³ = 134020391 is a prime.

It is a super-2 number, since 2×134020399² = 35922934696238402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 134020399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134020391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67010199 + 67010200.

It is an arithmetic number, because the mean of its divisors is an integer number (67010200).

Almost surely, 2^134020399 is an apocalyptic number.

134020399 is a deficient number, since it is larger than the sum of its proper divisors (1).

134020399 is an equidigital number, since it uses as much as digits as its factorization.

134020399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 134020399 is about 11576.7179718606. The cubic root of 134020399 is about 511.7489601333.

The spelling of 134020399 in words is "one hundred thirty-four million, twenty thousand, three hundred ninety-nine".