991454234 has 8 divisors (see below), whose sum is σ = 1488040788. Its totient is φ = 495440640.

The previous prime is 991454227. The next prime is 991454281. The reversal of 991454234 is 432454199.

It can be written as a sum of positive squares in 2 ways, for example, as 945255025 + 46199209 = 30745^2 + 6797^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 991454191 and 991454200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138887 + ... + 145850.

Almost surely, 2^991454234 is an apocalyptic number.

991454234 is a deficient number, since it is larger than the sum of its proper divisors (496586554).

991454234 is a wasteful number, since it uses less digits than its factorization.

991454234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286480.

The product of its digits is 155520, while the sum is 41.

The square root of 991454234 is about 31487.3662601368. The cubic root of 991454234 is about 997.1432581305.

The spelling of 991454234 in words is "nine hundred ninety-one million, four hundred fifty-four thousand, two hundred thirty-four".