999999464 has 8 divisors (see below), whose sum is σ = 1874999010. Its totient is φ = 499999728.

The previous prime is 999999433. The next prime is 999999487. The reversal of 999999464 is 464999999.

It can be written as a sum of positive squares in only one way, i.e., 564442564 + 435556900 = 23758^2 + 20870^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 999999394 and 999999403.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62499959 + ... + 62499974.

Almost surely, 2^999999464 is an apocalyptic number.

It is an amenable number.

999999464 is a deficient number, since it is larger than the sum of its proper divisors (874999546).

999999464 is a wasteful number, since it uses less digits than its factorization.

999999464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124999939 (or 124999935 counting only the distinct ones).

The product of its digits is 51018336, while the sum is 68.

The square root of 999999464 is about 31622.7681267785. The cubic root of 999999464 is about 999.9998213333. Note that the first 3 decimals are identical.

The spelling of 999999464 in words is "nine hundred ninety-nine million, nine hundred ninety-nine thousand, four hundred sixty-four".