999350649 has 64 divisors (see below), whose sum is σ = 1670492160. Its totient is φ = 585144000.

The previous prime is 999350641. The next prime is 999350663. The reversal of 999350649 is 946053999.

999350649 is a `hidden beast` number, since 9 + 9 + 93 + 506 + 49 = 666.

It is not a de Polignac number, because 999350649 - 2³ = 999350641 is a prime.

999350649 is a modest number, since divided by 350649 gives 999 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 999350595 and 999350604.

It is not an unprimeable number, because it can be changed into a prime (999350641) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2318464 + ... + 2318894.

It is an arithmetic number, because the mean of its divisors is an integer number (26101440).

Almost surely, 2^999350649 is an apocalyptic number.

999350649 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

It is an amenable number.

999350649 is a deficient number, since it is larger than the sum of its proper divisors (671141511).

999350649 is a wasteful number, since it uses less digits than its factorization.

999350649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699 (or 693 counting only the distinct ones).

The product of its (nonzero) digits is 2361960, while the sum is 54.

The square root of 999350649 is about 31612.5077935933. The cubic root of 999350649 is about 999.7835027990.

It can be divided in two parts, 999350 and 649, that added together give a palindrome (999999).

The spelling of 999350649 in words is "nine hundred ninety-nine million, three hundred fifty thousand, six hundred forty-nine".