872449147 has 2 divisors, whose sum is σ = 872449148. Its totient is φ = 872449146.

The previous prime is 872449121. The next prime is 872449153. The reversal of 872449147 is 741944278.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-872449147 is a prime.

It is a super-2 number, since 2×872449147² = 1522335028202055218, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 872449097 and 872449106.

It is not a weakly prime, because it can be changed into another prime (872449447) 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, 436224573 + 436224574.

It is an arithmetic number, because the mean of its divisors is an integer number (436224574).

Almost surely, 2^872449147 is an apocalyptic number.

872449147 is a deficient number, since it is larger than the sum of its proper divisors (1).

872449147 is an equidigital number, since it uses as much as digits as its factorization.

872449147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584, while the sum is 46.

The square root of 872449147 is about 29537.2501597559. The cubic root of 872449147 is about 955.5352379166.

The spelling of 872449147 in words is "eight hundred seventy-two million, four hundred forty-nine thousand, one hundred forty-seven".