999478742 has 8 divisors (see below), whose sum is σ = 1507501632. Its totient is φ = 496978200.

The previous prime is 999478693. The next prime is 999478757. The reversal of 999478742 is 247874999.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1380134 + ... + 1380857.

It is an arithmetic number, because the mean of its divisors is an integer number (188437704).

Almost surely, 2^999478742 is an apocalyptic number.

999478742 is a deficient number, since it is larger than the sum of its proper divisors (508022890).

999478742 is a wasteful number, since it uses less digits than its factorization.

999478742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2761174.

The product of its digits is 9144576, while the sum is 59.

The square root of 999478742 is about 31614.5337147332. The cubic root of 999478742 is about 999.8262171346.

The spelling of 999478742 in words is "nine hundred ninety-nine million, four hundred seventy-eight thousand, seven hundred forty-two".