378961727 has 4 divisors (see below), whose sum is σ = 379012440. Its totient is φ = 378911016.

The previous prime is 378961703. The next prime is 378961741. The reversal of 378961727 is 727169873.

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

It is a cyclic number.

It is not a de Polignac number, because 378961727 - 2²⁸ = 110526271 is a prime.

It is a super-2 number, since 2×378961727² = 287223981061645058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378961747) 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, 11693 + ... + 29910.

It is an arithmetic number, because the mean of its divisors is an integer number (94753110).

Almost surely, 2^378961727 is an apocalyptic number.

378961727 is a deficient number, since it is larger than the sum of its proper divisors (50713).

378961727 is an equidigital number, since it uses as much as digits as its factorization.

378961727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50712.

The product of its digits is 889056, while the sum is 50.

The square root of 378961727 is about 19466.9393331361. The cubic root of 378961727 is about 723.6553607051.

The spelling of 378961727 in words is "three hundred seventy-eight million, nine hundred sixty-one thousand, seven hundred twenty-seven".