121829089 has 4 divisors (see below), whose sum is σ = 128995524. Its totient is φ = 114662656.

The previous prime is 121829069. The next prime is 121829153. The reversal of 121829089 is 980928121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44089600 + 77739489 = 6640^2 + 8817^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121829089 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (121829009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3583192 + ... + 3583225.

It is an arithmetic number, because the mean of its divisors is an integer number (32248881).

Almost surely, 2^121829089 is an apocalyptic number.

It is an amenable number.

121829089 is a deficient number, since it is larger than the sum of its proper divisors (7166435).

121829089 is an equidigital number, since it uses as much as digits as its factorization.

121829089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7166434.

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 121829089 is about 11037.6215282098. The cubic root of 121829089 is about 495.7358562015.

The spelling of 121829089 in words is "one hundred twenty-one million, eight hundred twenty-nine thousand, eighty-nine".