814401478 has 16 divisors (see below), whose sum is σ = 1348716096. Its totient is φ = 365721640.

The previous prime is 814401463. The next prime is 814401499. The reversal of 814401478 is 874104418.

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, 221176 + ... + 224827.

It is an arithmetic number, because the mean of its divisors is an integer number (84294756).

Almost surely, 2^814401478 is an apocalyptic number.

814401478 is a deficient number, since it is larger than the sum of its proper divisors (534314618).

814401478 is a wasteful number, since it uses less digits than its factorization.

814401478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446099.

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 814401478 is about 28537.7202663422. The cubic root of 814401478 is about 933.8551490493.

The spelling of 814401478 in words is "eight hundred fourteen million, four hundred one thousand, four hundred seventy-eight".