991400314 has 4 divisors (see below), whose sum is σ = 1487100474. Its totient is φ = 495700156.

The previous prime is 991400299. The next prime is 991400327. The reversal of 991400314 is 413004199.

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., 736199689 + 255200625 = 27133^2 + 15975^2 .

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, 247850077 + ... + 247850080.

Almost surely, 2^991400314 is an apocalyptic number.

991400314 is a deficient number, since it is larger than the sum of its proper divisors (495700160).

991400314 is a wasteful number, since it uses less digits than its factorization.

991400314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495700159.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 991400314 is about 31486.5100320756. The cubic root of 991400314 is about 997.1251813374.

The spelling of 991400314 in words is "nine hundred ninety-one million, four hundred thousand, three hundred fourteen".