16747994 has 4 divisors (see below), whose sum is σ = 25121994. Its totient is φ = 8373996.

The previous prime is 16747981. The next prime is 16748003. The reversal of 16747994 is 49974761.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49974761 = 1009 ⋅49529.

It can be written as a sum of positive squares in only one way, i.e., 12996025 + 3751969 = 3605^2 + 1937^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4186997 + ... + 4187000.

Almost surely, 2^16747994 is an apocalyptic number.

16747994 is a deficient number, since it is larger than the sum of its proper divisors (8374000).

16747994 is an equidigital number, since it uses as much as digits as its factorization.

16747994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8373999.

The product of its digits is 381024, while the sum is 47.

The square root of 16747994 is about 4092.4313066929. The cubic root of 16747994 is about 255.8512828450.

The spelling of 16747994 in words is "sixteen million, seven hundred forty-seven thousand, nine hundred ninety-four".