499979997 has 48 divisors (see below), whose sum is σ = 821822976. Its totient is φ = 290160000.

The previous prime is 499979951. The next prime is 499979999. The reversal of 499979997 is 799979994.

It is not a de Polignac number, because 499979997 - 2¹² = 499975901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499979999) 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, 309163 + ... + 310775.

It is an arithmetic number, because the mean of its divisors is an integer number (17121312).

Almost surely, 2^499979997 is an apocalyptic number.

It is an amenable number.

499979997 is a deficient number, since it is larger than the sum of its proper divisors (321842979).

499979997 is a wasteful number, since it uses less digits than its factorization.

499979997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762 (or 1759 counting only the distinct ones).

The product of its digits is 104162436, while the sum is 72.

The square root of 499979997 is about 22360.2324898468. The cubic root of 499979997 is about 793.6899415819.

It can be divided in two parts, 4 and 99979997, that added together give a square (99980001 = 9999²).

The spelling of 499979997 in words is "four hundred ninety-nine million, nine hundred seventy-nine thousand, nine hundred ninety-seven".