454991278 has 16 divisors (see below), whose sum is σ = 805146624. Its totient is φ = 188705880.

The previous prime is 454991263. The next prime is 454991287. The reversal of 454991278 is 872199454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 523750 + ... + 524617.

It is an arithmetic number, because the mean of its divisors is an integer number (50321664).

Almost surely, 2^454991278 is an apocalyptic number.

454991278 is a deficient number, since it is larger than the sum of its proper divisors (350155346).

454991278 is a wasteful number, since it uses less digits than its factorization.

454991278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048407.

The product of its digits is 725760, while the sum is 49.

The square root of 454991278 is about 21330.5245598883. The cubic root of 454991278 is about 769.1322534774.

The spelling of 454991278 in words is "four hundred fifty-four million, nine hundred ninety-one thousand, two hundred seventy-eight".