428892947 has 16 divisors (see below), whose sum is σ = 517670400. Its totient is φ = 347120640.

The previous prime is 428892943. The next prime is 428892953. The reversal of 428892947 is 749298824.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 428892947 - 2² = 428892943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428892941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36179 + ... + 46547.

It is an arithmetic number, because the mean of its divisors is an integer number (32354400).

Almost surely, 2^428892947 is an apocalyptic number.

428892947 is a deficient number, since it is larger than the sum of its proper divisors (88777453).

428892947 is a wasteful number, since it uses less digits than its factorization.

428892947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10706.

The product of its digits is 2322432, while the sum is 53.

The square root of 428892947 is about 20709.7307321945. The cubic root of 428892947 is about 754.1359335536.

The spelling of 428892947 in words is "four hundred twenty-eight million, eight hundred ninety-two thousand, nine hundred forty-seven".