457678394 has 8 divisors (see below), whose sum is σ = 686778240. Its totient is φ = 228752316.

The previous prime is 457678387. The next prime is 457678423. The reversal of 457678394 is 493876754.

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

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 in 3 ways as a sum of consecutive naturals, for example, 36644 + ... + 47519.

It is an arithmetic number, because the mean of its divisors is an integer number (85847280).

Almost surely, 2^457678394 is an apocalyptic number.

457678394 is a deficient number, since it is larger than the sum of its proper divisors (229099846).

457678394 is a wasteful number, since it uses less digits than its factorization.

457678394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86884.

The product of its digits is 5080320, while the sum is 53.

The square root of 457678394 is about 21393.4194087808. The cubic root of 457678394 is about 770.6434122906.

The spelling of 457678394 in words is "four hundred fifty-seven million, six hundred seventy-eight thousand, three hundred ninety-four".