999505949 has 8 divisors (see below), whose sum is σ = 1076745600. Its totient is φ = 922316976.

The previous prime is 999505931. The next prime is 999505951. The reversal of 999505949 is 949505999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999505949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999505649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34952 + ... + 56750.

It is an arithmetic number, because the mean of its divisors is an integer number (134593200).

Almost surely, 2^999505949 is an apocalyptic number.

It is an amenable number.

999505949 is a deficient number, since it is larger than the sum of its proper divisors (77239651).

999505949 is a wasteful number, since it uses less digits than its factorization.

999505949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25339.

The product of its (nonzero) digits is 5904900, while the sum is 59.

The square root of 999505949 is about 31614.9640044078. The cubic root of 999505949 is about 999.8352892052.

The spelling of 999505949 in words is "nine hundred ninety-nine million, five hundred five thousand, nine hundred forty-nine".