10020949 has 2 divisors, whose sum is σ = 10020950. Its totient is φ = 10020948.

The previous prime is 10020947. The next prime is 10020971. The reversal of 10020949 is 94902001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7800849 + 2220100 = 2793^2 + 1490^2 .

It is a cyclic number.

It is not a de Polignac number, because 10020949 - 2¹ = 10020947 is a prime.

Together with 10020947, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10020947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010474 + 5010475.

It is an arithmetic number, because the mean of its divisors is an integer number (5010475).

Almost surely, 2^10020949 is an apocalyptic number.

It is an amenable number.

10020949 is a deficient number, since it is larger than the sum of its proper divisors (1).

10020949 is an equidigital number, since it uses as much as digits as its factorization.

10020949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 10020949 is about 3165.5882549694. The cubic root of 10020949 is about 215.5938082445.

The spelling of 10020949 in words is "ten million, twenty thousand, nine hundred forty-nine".