1319997 has 16 divisors (see below), whose sum is σ = 2027520. Its totient is φ = 748272.

The previous prime is 1319963. The next prime is 1320019. The reversal of 1319997 is 7999131.

It is not a de Polignac number, because 1319997 - 2⁶ = 1319933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1319917) 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, 4888 + ... + 5150.

It is an arithmetic number, because the mean of its divisors is an integer number (126720).

2^1319997 is an apocalyptic number.

It is an amenable number.

1319997 is a deficient number, since it is larger than the sum of its proper divisors (707523).

1319997 is a wasteful number, since it uses less digits than its factorization.

1319997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512.

The product of its digits is 15309, while the sum is 39.

The square root of 1319997 is about 1148.9112237244. The cubic root of 1319997 is about 109.6960479455.

The spelling of 1319997 in words is "one million, three hundred nineteen thousand, nine hundred ninety-seven".