10621439 has 2 divisors, whose sum is σ = 10621440. Its totient is φ = 10621438.

The previous prime is 10621411. The next prime is 10621441. The reversal of 10621439 is 93412601.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10621439 - 2²⁰ = 9572863 is a prime.

It is a super-2 number, since 2×10621439² = 225629932861442, which contains 22 as substring.

Together with 10621441, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₇₀₃₀₉₇ and since 10621439 and 703097 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10621489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5310719 + 5310720.

It is an arithmetic number, because the mean of its divisors is an integer number (5310720).

Almost surely, 2^10621439 is an apocalyptic number.

10621439 is a deficient number, since it is larger than the sum of its proper divisors (1).

10621439 is an equidigital number, since it uses as much as digits as its factorization.

10621439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 10621439 is about 3259.0549243607. The cubic root of 10621439 is about 219.8169206903.

The spelling of 10621439 in words is "ten million, six hundred twenty-one thousand, four hundred thirty-nine".