427900169 has 4 divisors (see below), whose sum is σ = 431899344. Its totient is φ = 423900996.

The previous prime is 427900157. The next prime is 427900171. The reversal of 427900169 is 961009724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427900169 is a prime.

It is a super-2 number, since 2×427900169² = 366197109260457122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427900139) 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, 1999427 + ... + 1999640.

It is an arithmetic number, because the mean of its divisors is an integer number (107974836).

Almost surely, 2^427900169 is an apocalyptic number.

It is an amenable number.

427900169 is a deficient number, since it is larger than the sum of its proper divisors (3999175).

427900169 is a wasteful number, since it uses less digits than its factorization.

427900169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3999174.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 427900169 is about 20685.7479681060. The cubic root of 427900169 is about 753.5536064341.

The spelling of 427900169 in words is "four hundred twenty-seven million, nine hundred thousand, one hundred sixty-nine".