470564639 has 4 divisors (see below), whose sum is σ = 473562024. Its totient is φ = 467567256.

The previous prime is 470564603. The next prime is 470564669. The reversal of 470564639 is 936465074.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 936465074 = 2 ⋅468232537.

It is a cyclic number.

It is not a de Polignac number, because 470564639 - 2¹² = 470560543 is a prime.

It is a super-3 number, since 3×470564639³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 470564639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (470564669) 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, 1498457 + ... + 1498770.

It is an arithmetic number, because the mean of its divisors is an integer number (118390506).

Almost surely, 2^470564639 is an apocalyptic number.

470564639 is a deficient number, since it is larger than the sum of its proper divisors (2997385).

470564639 is a wasteful number, since it uses less digits than its factorization.

470564639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2997384.

The product of its (nonzero) digits is 544320, while the sum is 44.

The square root of 470564639 is about 21692.5019073412. The cubic root of 470564639 is about 777.8092366951.

The spelling of 470564639 in words is "four hundred seventy million, five hundred sixty-four thousand, six hundred thirty-nine".