429161869 has 4 divisors (see below), whose sum is σ = 432042300. Its totient is φ = 426281440.

The previous prime is 429161851. The next prime is 429161879. The reversal of 429161869 is 968161924.

It is a happy number.

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 28761769 + 400400100 = 5363^2 + 20010^2 .

It is a cyclic number.

It is not a de Polignac number, because 429161869 - 2²¹ = 427064717 is a prime.

It is a super-2 number, since 2×429161869² = 368359819607146322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (429161819) 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, 1439992 + ... + 1440289.

It is an arithmetic number, because the mean of its divisors is an integer number (108010575).

Almost surely, 2^429161869 is an apocalyptic number.

It is an amenable number.

429161869 is a deficient number, since it is larger than the sum of its proper divisors (2880431).

429161869 is a wasteful number, since it uses less digits than its factorization.

429161869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2880430.

The product of its digits is 186624, while the sum is 46.

The square root of 429161869 is about 20716.2223631626. Note that the first 3 decimals coincide. The cubic root of 429161869 is about 754.2935186205.

The spelling of 429161869 in words is "four hundred twenty-nine million, one hundred sixty-one thousand, eight hundred sixty-nine".