421955169 has 8 divisors (see below), whose sum is σ = 562810080. Its totient is φ = 281201856.

The previous prime is 421955161. The next prime is 421955179. The reversal of 421955169 is 961559124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 421955169 - 2³ = 421955161 is a prime.

It is a super-2 number, since 2×421955169² = 356092329291637122, 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 421955169.

It is not an unprimeable number, because it can be changed into a prime (421955161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15112 + ... + 32745.

It is an arithmetic number, because the mean of its divisors is an integer number (70351260).

Almost surely, 2^421955169 is an apocalyptic number.

It is an amenable number.

421955169 is a deficient number, since it is larger than the sum of its proper divisors (140854911).

421955169 is a wasteful number, since it uses less digits than its factorization.

421955169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50799.

The product of its digits is 97200, while the sum is 42.

The square root of 421955169 is about 20541.5473857254. The cubic root of 421955169 is about 750.0475045466.

The spelling of 421955169 in words is "four hundred twenty-one million, nine hundred fifty-five thousand, one hundred sixty-nine".