378429739 has 2 divisors, whose sum is σ = 378429740. Its totient is φ = 378429738.

The previous prime is 378429697. The next prime is 378429749. The reversal of 378429739 is 937924873.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 378429739 - 2¹⁷ = 378298667 is a prime.

It is not a weakly prime, because it can be changed into another prime (378429749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189214869 + 189214870.

It is an arithmetic number, because the mean of its divisors is an integer number (189214870).

Almost surely, 2^378429739 is an apocalyptic number.

378429739 is a deficient number, since it is larger than the sum of its proper divisors (1).

378429739 is an equidigital number, since it uses as much as digits as its factorization.

378429739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 52.

The square root of 378429739 is about 19453.2706504588. The cubic root of 378429739 is about 723.3165786903.

The spelling of 378429739 in words is "three hundred seventy-eight million, four hundred twenty-nine thousand, seven hundred thirty-nine".