470146921 has 4 divisors (see below), whose sum is σ = 471751812. Its totient is φ = 468542032.

The previous prime is 470146903. The next prime is 470146939. The reversal of 470146921 is 129641074.

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

It is an interprime number because it is at equal distance from previous prime (470146903) and next prime (470146939).

It can be written as a sum of positive squares in 2 ways, for example, as 423906921 + 46240000 = 20589^2 + 6800^2 .

It is a cyclic number.

It is not a de Polignac number, because 470146921 - 2⁵ = 470146889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (470146981) 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, 802006 + ... + 802591.

It is an arithmetic number, because the mean of its divisors is an integer number (117937953).

Almost surely, 2^470146921 is an apocalyptic number.

It is an amenable number.

470146921 is a deficient number, since it is larger than the sum of its proper divisors (1604891).

470146921 is a wasteful number, since it uses less digits than its factorization.

470146921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604890.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 470146921 is about 21682.8716041026. The cubic root of 470146921 is about 777.5790160352.

Adding to 470146921 its reverse (129641074), we get a palindrome (599787995).

It can be divided in two parts, 47014 and 6921, that added together give a palindrome (53935).

The spelling of 470146921 in words is "four hundred seventy million, one hundred forty-six thousand, nine hundred twenty-one".