428971465 has 8 divisors (see below), whose sum is σ = 554363208. Its totient is φ = 316778880.

The previous prime is 428971429. The next prime is 428971511. The reversal of 428971465 is 564179824.

It can be written as a sum of positive squares in 4 ways, for example, as 49617936 + 379353529 = 7044^2 + 19477^2 .

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

It is not a de Polignac number, because 428971465 - 2¹¹ = 428969417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3299716 + ... + 3299845.

It is an arithmetic number, because the mean of its divisors is an integer number (69295401).

Almost surely, 2^428971465 is an apocalyptic number.

It is an amenable number.

428971465 is a deficient number, since it is larger than the sum of its proper divisors (125391743).

428971465 is a wasteful number, since it uses less digits than its factorization.

428971465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6599579.

The product of its digits is 483840, while the sum is 46.

The square root of 428971465 is about 20711.6263243619. The cubic root of 428971465 is about 754.1819509670.

The spelling of 428971465 in words is "four hundred twenty-eight million, nine hundred seventy-one thousand, four hundred sixty-five".