4247899669 has 12 divisors (see below), whose sum is σ = 4711994532. Its totient is φ = 3825494400.

The previous prime is 4247899619. The next prime is 4247899681. The reversal of 4247899669 is 9669987424.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1708747569 + 2539152100 = 41337^2 + 50390^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4247899669 is a prime.

It is a super-2 number, since 2×4247899669² = 36089303195780619122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4247899669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4247899619) 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, 299602 + ... + 313459.

It is an arithmetic number, because the mean of its divisors is an integer number (392666211).

Almost surely, 2^4247899669 is an apocalyptic number.

It is an amenable number.

4247899669 is a deficient number, since it is larger than the sum of its proper divisors (464094863).

4247899669 is a wasteful number, since it uses less digits than its factorization.

4247899669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613128 (or 613115 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 64.

The square root of 4247899669 is about 65175.9132578900. The cubic root of 4247899669 is about 1619.5390230591.

The spelling of 4247899669 in words is "four billion, two hundred forty-seven million, eight hundred ninety-nine thousand, six hundred sixty-nine".