428349299 has 12 divisors (see below), whose sum is σ = 492290064. Its totient is φ = 365102784.

The previous prime is 428349287. The next prime is 428349301. The reversal of 428349299 is 992943824.

It is a happy number.

It is not a de Polignac number, because 428349299 - 2²⁰ = 427300723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428349209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 937079 + ... + 937535.

It is an arithmetic number, because the mean of its divisors is an integer number (41024172).

Almost surely, 2^428349299 is an apocalyptic number.

428349299 is a deficient number, since it is larger than the sum of its proper divisors (63940765).

428349299 is an frugal number, since it uses more digits than its factorization.

428349299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214 (or 757 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 50.

The square root of 428349299 is about 20696.6011460819. The cubic root of 428349299 is about 753.8171610458.

The spelling of 428349299 in words is "four hundred twenty-eight million, three hundred forty-nine thousand, two hundred ninety-nine".