1039889961 has 32 divisors (see below), whose sum is σ = 1753712640. Its totient is φ = 602830800.

The previous prime is 1039889933. The next prime is 1039889987. The reversal of 1039889961 is 1699889301.

It is not a de Polignac number, because 1039889961 - 2⁹ = 1039889449 is a prime.

It is a super-2 number, since 2×1039889961² = 2162742261977163042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1039889898 and 1039889907.

It is not an unprimeable number, because it can be changed into a prime (1039889911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69285 + ... + 82946.

It is an arithmetic number, because the mean of its divisors is an integer number (54803520).

Almost surely, 2^1039889961 is an apocalyptic number.

1039889961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1039889961 is a deficient number, since it is larger than the sum of its proper divisors (713822679).

1039889961 is a wasteful number, since it uses less digits than its factorization.

1039889961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152274 (or 152268 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 54.

The square root of 1039889961 is about 32247.3248657931. The cubic root of 1039889961 is about 1013.1236695317.

The spelling of 1039889961 in words is "one billion, thirty-nine million, eight hundred eighty-nine thousand, nine hundred sixty-one".