378424873 has 4 divisors (see below), whose sum is σ = 379081300. Its totient is φ = 377768448.

The previous prime is 378424847. The next prime is 378424877.

It is a happy number.

378424873 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 256256064 + 122168809 = 16008^2 + 11053^2 .

It is a cyclic number.

It is not a de Polignac number, because 378424873 - 2¹³ = 378416681 is a prime.

It is a super-2 number, since 2×378424873² = 286410769010132258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378424877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327348 + ... + 328501.

It is an arithmetic number, because the mean of its divisors is an integer number (94770325).

Almost surely, 2^378424873 is an apocalyptic number.

It is an amenable number.

378424873 is a deficient number, since it is larger than the sum of its proper divisors (656427).

378424873 is an equidigital number, since it uses as much as digits as its factorization.

378424873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656426.

The product of its digits is 903168, while the sum is 46.

The square root of 378424873 is about 19453.1455811136. The cubic root of 378424873 is about 723.3134784463.

The spelling of 378424873 in words is "three hundred seventy-eight million, four hundred twenty-four thousand, eight hundred seventy-three".