378417393 has 16 divisors (see below), whose sum is σ = 560936640. Its totient is φ = 252135072.

The previous prime is 378417373. The next prime is 378417401. The reversal of 378417393 is 393714873.

It is not a de Polignac number, because 378417393 - 2²⁴ = 361640177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (378417323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68430 + ... + 73752.

It is an arithmetic number, because the mean of its divisors is an integer number (35058540).

Almost surely, 2^378417393 is an apocalyptic number.

It is an amenable number.

378417393 is a deficient number, since it is larger than the sum of its proper divisors (182519247).

378417393 is a wasteful number, since it uses less digits than its factorization.

378417393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7965 (or 7959 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 378417393 is about 19452.9533233388. The cubic root of 378417393 is about 723.3087127091.

The spelling of 378417393 in words is "three hundred seventy-eight million, four hundred seventeen thousand, three hundred ninety-three".