9945049 has 2 divisors, whose sum is σ = 9945050. Its totient is φ = 9945048.

The previous prime is 9945043. The next prime is 9945053. The reversal of 9945049 is 9405499.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9653449 + 291600 = 3107^2 + 540^2 .

It is a cyclic number.

It is not a de Polignac number, because 9945049 - 2²³ = 1556441 is a prime.

It is a super-2 number, since 2×9945049² = 197807999224802, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (9945043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4972524 + 4972525.

It is an arithmetic number, because the mean of its divisors is an integer number (4972525).

Almost surely, 2^9945049 is an apocalyptic number.

It is an amenable number.

9945049 is a deficient number, since it is larger than the sum of its proper divisors (1).

9945049 is an equidigital number, since it uses as much as digits as its factorization.

9945049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 9945049 is about 3153.5771752091. The cubic root of 9945049 is about 215.0481161464.

It can be divided in two parts, 99450 and 49, that added together give a palindrome (99499).

The spelling of 9945049 in words is "nine million, nine hundred forty-five thousand, forty-nine".