499781977 has 8 divisors (see below), whose sum is σ = 513608000. Its totient is φ = 485972784.

The previous prime is 499781951. The next prime is 499781983. The reversal of 499781977 is 779187994.

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-499781977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499781917) 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, 77524 + ... + 83722.

It is an arithmetic number, because the mean of its divisors is an integer number (64201000).

Almost surely, 2^499781977 is an apocalyptic number.

It is an amenable number.

499781977 is a deficient number, since it is larger than the sum of its proper divisors (13826023).

499781977 is a wasteful number, since it uses less digits than its factorization.

499781977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8415.

The product of its digits is 8001504, while the sum is 61.

The square root of 499781977 is about 22355.8041009488. The cubic root of 499781977 is about 793.5851458989.

The spelling of 499781977 in words is "four hundred ninety-nine million, seven hundred eighty-one thousand, nine hundred seventy-seven".