999072417 has 48 divisors (see below), whose sum is σ = 1616155200. Its totient is φ = 546698880.

The previous prime is 999072401. The next prime is 999072469. The reversal of 999072417 is 714270999.

It is a happy number.

It is not a de Polignac number, because 999072417 - 2⁴ = 999072401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (999072317) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 557559 + ... + 559347.

It is an arithmetic number, because the mean of its divisors is an integer number (33669900).

Almost surely, 2^999072417 is an apocalyptic number.

It is an amenable number.

999072417 is a deficient number, since it is larger than the sum of its proper divisors (617082783).

999072417 is a wasteful number, since it uses less digits than its factorization.

999072417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1966 (or 1959 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 48.

The square root of 999072417 is about 31608.1068240412. The cubic root of 999072417 is about 999.6907100162.

The spelling of 999072417 in words is "nine hundred ninety-nine million, seventy-two thousand, four hundred seventeen".