379827397 has 4 divisors (see below), whose sum is σ = 379867180. Its totient is φ = 379787616.

The previous prime is 379827391. The next prime is 379827473. The reversal of 379827397 is 793728973.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 303247396 + 76580001 = 17414^2 + 8751^2 .

It is a 3-Lehmer number, since φ(379827397) divides (379827397-1)³.

It is a cyclic number.

It is not a de Polignac number, because 379827397 - 2⁷ = 379827269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (379827391) 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, 3979 + ... + 27847.

It is an arithmetic number, because the mean of its divisors is an integer number (94966795).

Almost surely, 2^379827397 is an apocalyptic number.

379827397 is the 15913-rd pentagonal number.

It is an amenable number.

379827397 is a deficient number, since it is larger than the sum of its proper divisors (39783).

379827397 is a wasteful number, since it uses less digits than its factorization.

379827397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39782.

The product of its digits is 4000752, while the sum is 55.

The square root of 379827397 is about 19489.1610132402. The cubic root of 379827397 is about 724.2059618998.

The spelling of 379827397 in words is "three hundred seventy-nine million, eight hundred twenty-seven thousand, three hundred ninety-seven".