1072909 has 4 divisors (see below), whose sum is σ = 1075360. Its totient is φ = 1070460.

The previous prime is 1072901. The next prime is 1072919. The reversal of 1072909 is 9092701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9092701 = 967 ⋅9403.

It is a cyclic number.

It is not a de Polignac number, because 1072909 - 2³ = 1072901 is a prime.

It is a super-2 number, since 2×1072909² = 2302267444562, 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (1072901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369 + ... + 1510.

It is an arithmetic number, because the mean of its divisors is an integer number (268840).

2^1072909 is an apocalyptic number.

It is an amenable number.

1072909 is a deficient number, since it is larger than the sum of its proper divisors (2451).

1072909 is an equidigital number, since it uses as much as digits as its factorization.

1072909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2450.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 1072909 is about 1035.8132070987. The cubic root of 1072909 is about 102.3735183902.

The spelling of 1072909 in words is "one million, seventy-two thousand, nine hundred nine".