999672481 has 2 divisors, whose sum is σ = 999672482. Its totient is φ = 999672480.

The previous prime is 999672473. The next prime is 999672511. The reversal of 999672481 is 184276999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 511483456 + 488189025 = 22616^2 + 22095^2 .

It is a cyclic number.

It is not a de Polignac number, because 999672481 - 2³ = 999672473 is a prime.

It is a super-2 number, since 2×999672481² = 1998690138537390722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (999672461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499836240 + 499836241.

It is an arithmetic number, because the mean of its divisors is an integer number (499836241).

Almost surely, 2^999672481 is an apocalyptic number.

It is an amenable number.

999672481 is a deficient number, since it is larger than the sum of its proper divisors (1).

999672481 is an equidigital number, since it uses as much as digits as its factorization.

999672481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 55.

The square root of 999672481 is about 31617.5976475127. The cubic root of 999672481 is about 999.8908150791.

The spelling of 999672481 in words is "nine hundred ninety-nine million, six hundred seventy-two thousand, four hundred eighty-one".