1039631 has 2 divisors, whose sum is σ = 1039632. Its totient is φ = 1039630.

The previous prime is 1039607. The next prime is 1039651. The reversal of 1039631 is 1369301.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1039631 is a prime.

It is a super-2 number, since 2×1039631² = 2161665232322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1039597 and 1039606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1039651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 519815 + 519816.

It is an arithmetic number, because the mean of its divisors is an integer number (519816).

2^1039631 is an apocalyptic number.

1039631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1039631 is an equidigital number, since it uses as much as digits as its factorization.

1039631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 1039631 is about 1019.6229695333. The cubic root of 1039631 is about 101.3039564062.

The spelling of 1039631 in words is "one million, thirty-nine thousand, six hundred thirty-one".