378461 has 4 divisors (see below), whose sum is σ = 398400. Its totient is φ = 358524.

The previous prime is 378449. The next prime is 378463. The reversal of 378461 is 164873.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 164873 = 79 ⋅2087.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378461 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9941 + ... + 9978.

It is an arithmetic number, because the mean of its divisors is an integer number (99600).

2³⁷⁸⁴⁶¹ is an apocalyptic number.

It is an amenable number.

378461 is a deficient number, since it is larger than the sum of its proper divisors (19939).

378461 is a wasteful number, since it uses less digits than its factorization.

378461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19938.

The product of its digits is 4032, while the sum is 29.

The square root of 378461 is about 615.1918399979. The cubic root of 378461 is about 72.3336495181. Note that the first 3 decimals are identical.

The spelling of 378461 in words is "three hundred seventy-eight thousand, four hundred sixty-one".