378829469 has 2 divisors, whose sum is σ = 378829470. Its totient is φ = 378829468.

The previous prime is 378829453. The next prime is 378829483. The reversal of 378829469 is 964928873.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 378769444 + 60025 = 19462^2 + 245^2 .

It is an emirp because it is prime and its reverse (964928873) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 378829469 - 2⁴ = 378829453 is a prime.

It is a super-2 number, since 2×378829469² = 287023533165643922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378829439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189414734 + 189414735.

It is an arithmetic number, because the mean of its divisors is an integer number (189414735).

Almost surely, 2^378829469 is an apocalyptic number.

It is an amenable number.

378829469 is a deficient number, since it is larger than the sum of its proper divisors (1).

378829469 is an equidigital number, since it uses as much as digits as its factorization.

378829469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 56.

The square root of 378829469 is about 19463.5420466060. The cubic root of 378829469 is about 723.5711654419.

The spelling of 378829469 in words is "three hundred seventy-eight million, eight hundred twenty-nine thousand, four hundred sixty-nine".