429385861 has 4 divisors (see below), whose sum is σ = 444192300. Its totient is φ = 414579424.

The previous prime is 429385849. The next prime is 429385877. The reversal of 429385861 is 168583924.

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 231983361 + 197402500 = 15231^2 + 14050^2 .

It is a cyclic number.

It is not a de Polignac number, because 429385861 - 2¹¹ = 429383813 is a prime.

It is a super-2 number, since 2×429385861² = 368744435253422642, 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 (429385361) 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, 7403176 + ... + 7403233.

It is an arithmetic number, because the mean of its divisors is an integer number (111048075).

Almost surely, 2^429385861 is an apocalyptic number.

It is an amenable number.

429385861 is a deficient number, since it is larger than the sum of its proper divisors (14806439).

429385861 is a wasteful number, since it uses less digits than its factorization.

429385861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14806438.

The product of its digits is 414720, while the sum is 46.

The square root of 429385861 is about 20721.6278559383. The cubic root of 429385861 is about 754.4247250023.

The spelling of 429385861 in words is "four hundred twenty-nine million, three hundred eighty-five thousand, eight hundred sixty-one".