1072309 has 8 divisors (see below), whose sum is σ = 1297728. Its totient is φ = 864960.

The previous prime is 1072301. The next prime is 1072327. The reversal of 1072309 is 9032701.

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

It is not a de Polignac number, because 1072309 - 2³ = 1072301 is a prime.

It is a super-2 number, since 2×1072309² = 2299693182962, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

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 1072309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1072301) 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, 4387 + ... + 4624.

It is an arithmetic number, because the mean of its divisors is an integer number (162216).

2^1072309 is an apocalyptic number.

It is an amenable number.

1072309 is a deficient number, since it is larger than the sum of its proper divisors (225419).

1072309 is an equidigital number, since it uses as much as digits as its factorization.

1072309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9035.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 1072309 is about 1035.5235390854. The cubic root of 1072309 is about 102.3544314765.

The spelling of 1072309 in words is "one million, seventy-two thousand, three hundred nine".