1039881 has 4 divisors (see below), whose sum is σ = 1386512. Its totient is φ = 693252.

The previous prime is 1039837. The next prime is 1039891. The reversal of 1039881 is 1889301.

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: 1889301 = 3 ⋅629767.

It is not a de Polignac number, because 1039881 - 2⁶ = 1039817 is a prime.

It is a super-2 number, since 2×1039881² = 2162704988322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1039891) 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, 173311 + ... + 173316.

It is an arithmetic number, because the mean of its divisors is an integer number (346628).

2^1039881 is an apocalyptic number.

It is an amenable number.

1039881 is a deficient number, since it is larger than the sum of its proper divisors (346631).

1039881 is an equidigital number, since it uses as much as digits as its factorization.

1039881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346630.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 1039881 is about 1019.7455564993. The cubic root of 1039881 is about 101.3120759407.

The spelling of 1039881 in words is "one million, thirty-nine thousand, eight hundred eighty-one".