1499999969 has 8 divisors (see below), whose sum is σ = 1615982760. Its totient is φ = 1384102656.

The previous prime is 1499999957. The next prime is 1500000001. The reversal of 1499999969 is 9699999941.

It can be written as a sum of positive squares in 4 ways, for example, as 87142225 + 1412857744 = 9335^2 + 37588^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1499999969 - 2²⁰ = 1498951393 is a prime.

It is a super-2 number, since 2×1499999969² = 4499999814000001922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1499999896 and 1499999905.

It is not an unprimeable number, because it can be changed into a prime (1499999909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17747 + ... + 57575.

It is an arithmetic number, because the mean of its divisors is an integer number (201997845).

Almost surely, 2^1499999969 is an apocalyptic number.

It is an amenable number.

1499999969 is a deficient number, since it is larger than the sum of its proper divisors (115982791).

1499999969 is a wasteful number, since it uses less digits than its factorization.

1499999969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42739.

The product of its digits is 114791256, while the sum is 74.

The square root of 1499999969 is about 38729.8330618659. The cubic root of 1499999969 is about 1144.7142346675.

The spelling of 1499999969 in words is "one billion, four hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred sixty-nine".