1069991424 has 320 divisors, whose sum is σ = 3491294400. Its totient is φ = 322043904.

The previous prime is 1069991411. The next prime is 1069991437. The reversal of 1069991424 is 4241999601.

It is an interprime number because it is at equal distance from previous prime (1069991411) and next prime (1069991437).

It is a super-2 number, since 2×1069991424² = 2289763294867095552, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1069991424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6815154 + ... + 6815310.

It is an arithmetic number, because the mean of its divisors is an integer number (10910295).

Almost surely, 2^1069991424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1069991424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1745647200).

1069991424 is an abundant number, since it is smaller than the sum of its proper divisors (2421302976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1069991424 is a wasteful number, since it uses less digits than its factorization.

1069991424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 1069991424 is about 32710.7233793446. The cubic root of 1069991424 is about 1022.8063891733.

The spelling of 1069991424 in words is "one billion, sixty-nine million, nine hundred ninety-one thousand, four hundred twenty-four".