10449421 has 2 divisors, whose sum is σ = 10449422. Its totient is φ = 10449420.

The previous prime is 10449403. The next prime is 10449443. The reversal of 10449421 is 12494401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6786025 + 3663396 = 2605^2 + 1914^2 .

It is an emirp because it is prime and its reverse (12494401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10449421 - 2⁹ = 10448909 is a prime.

It is a super-3 number, since 3×10449421³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10449121) 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, 5224710 + 5224711.

It is an arithmetic number, because the mean of its divisors is an integer number (5224711).

Almost surely, 2^10449421 is an apocalyptic number.

It is an amenable number.

10449421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10449421 is an equidigital number, since it uses as much as digits as its factorization.

10449421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 10449421 is about 3232.5564186878. The cubic root of 10449421 is about 218.6237850405.

The spelling of 10449421 in words is "ten million, four hundred forty-nine thousand, four hundred twenty-one".