470493721 has 4 divisors (see below), whose sum is σ = 472882212. Its totient is φ = 468105232.

The previous prime is 470493719. The next prime is 470493731. The reversal of 470493721 is 127394074.

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 291897225 + 178596496 = 17085^2 + 13364^2 .

It is a cyclic number.

It is not a de Polignac number, because 470493721 - 2¹ = 470493719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (470493731) 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, 1193950 + ... + 1194343.

It is an arithmetic number, because the mean of its divisors is an integer number (118220553).

Almost surely, 2^470493721 is an apocalyptic number.

It is an amenable number.

470493721 is a deficient number, since it is larger than the sum of its proper divisors (2388491).

470493721 is a wasteful number, since it uses less digits than its factorization.

470493721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388490.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 470493721 is about 21690.8672256321. The cubic root of 470493721 is about 777.7701606276.

The spelling of 470493721 in words is "four hundred seventy million, four hundred ninety-three thousand, seven hundred twenty-one".