428038699 has 16 divisors (see below), whose sum is σ = 495684576. Its totient is φ = 365299200.

The previous prime is 428038697. The next prime is 428038739. The reversal of 428038699 is 996830824.

It is a cyclic number.

It is not a de Polignac number, because 428038699 - 2¹ = 428038697 is a prime.

It is a super-2 number, since 2×428038699² = 366434255683225202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428038693) 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, 76009 + ... + 81445.

It is an arithmetic number, because the mean of its divisors is an integer number (30980286).

Almost surely, 2^428038699 is an apocalyptic number.

428038699 is a deficient number, since it is larger than the sum of its proper divisors (67645877).

428038699 is a wasteful number, since it uses less digits than its factorization.

428038699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5886.

The product of its (nonzero) digits is 746496, while the sum is 49.

The square root of 428038699 is about 20689.0961378210. The cubic root of 428038699 is about 753.6349170805.

The spelling of 428038699 in words is "four hundred twenty-eight million, thirty-eight thousand, six hundred ninety-nine".