1499999797 has 8 divisors (see below), whose sum is σ = 1505930400. Its totient is φ = 1494081744.

The previous prime is 1499999791. The next prime is 1499999827. The reversal of 1499999797 is 7979999941.

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 1499999797 - 2¹¹ = 1499997749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1499999791) 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, 286479 + ... + 291667.

It is an arithmetic number, because the mean of its divisors is an integer number (188241300).

Almost surely, 2^1499999797 is an apocalyptic number.

It is an amenable number.

1499999797 is a deficient number, since it is larger than the sum of its proper divisors (5930603).

1499999797 is an equidigital number, since it uses as much as digits as its factorization.

1499999797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6275.

The product of its digits is 104162436, while the sum is 73.

The square root of 1499999797 is about 38729.8308413553. The cubic root of 1499999797 is about 1144.7141909140.

The spelling of 1499999797 in words is "one billion, four hundred ninety-nine million, nine hundred ninety-nine thousand, seven hundred ninety-seven".