999497146 has 4 divisors (see below), whose sum is σ = 1499245722. Its totient is φ = 499748572.

The previous prime is 999497101. The next prime is 999497173. The reversal of 999497146 is 641794999.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 875508921 + 123988225 = 29589^2 + 11135^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249874285 + ... + 249874288.

Almost surely, 2^999497146 is an apocalyptic number.

999497146 is a deficient number, since it is larger than the sum of its proper divisors (499748576).

999497146 is a wasteful number, since it uses less digits than its factorization.

999497146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499748575.

The product of its digits is 4408992, while the sum is 58.

The square root of 999497146 is about 31614.8247820544. The cubic root of 999497146 is about 999.8323538964.

The spelling of 999497146 in words is "nine hundred ninety-nine million, four hundred ninety-seven thousand, one hundred forty-six".