469949521 has 4 divisors (see below), whose sum is σ = 470596672. Its totient is φ = 469302372.

The previous prime is 469949509. The next prime is 469949527. The reversal of 469949521 is 125949964.

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 not a de Polignac number, because 469949521 - 2⁵ = 469949489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (469949527) 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, 322485 + ... + 323938.

It is an arithmetic number, because the mean of its divisors is an integer number (117649168).

Almost surely, 2^469949521 is an apocalyptic number.

It is an amenable number.

469949521 is a deficient number, since it is larger than the sum of its proper divisors (647151).

469949521 is an equidigital number, since it uses as much as digits as its factorization.

469949521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647150.

The product of its digits is 699840, while the sum is 49.

The square root of 469949521 is about 21678.3191460962. The cubic root of 469949521 is about 777.4701737575.

The spelling of 469949521 in words is "four hundred sixty-nine million, nine hundred forty-nine thousand, five hundred twenty-one".