1310939 has 4 divisors (see below), whose sum is σ = 1498224. Its totient is φ = 1123656.

The previous prime is 1310927. The next prime is 1310963. The reversal of 1310939 is 9390131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9390131 = 1181 ⋅7951.

It is a cyclic number.

It is not a de Polignac number, because 1310939 - 2⁴ = 1310923 is a prime.

It is a super-2 number, since 2×1310939² = 3437122123442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1310999) 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, 93632 + ... + 93645.

It is an arithmetic number, because the mean of its divisors is an integer number (374556).

2^1310939 is an apocalyptic number.

1310939 is a deficient number, since it is larger than the sum of its proper divisors (187285).

1310939 is an equidigital number, since it uses as much as digits as its factorization.

1310939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187284.

The product of its (nonzero) digits is 729, while the sum is 26.

The square root of 1310939 is about 1144.9624447990. The cubic root of 1310939 is about 109.4445553770. Note that the first 3 decimals are identical.

The spelling of 1310939 in words is "one million, three hundred ten thousand, nine hundred thirty-nine".