378997403 has 2 divisors, whose sum is σ = 378997404. Its totient is φ = 378997402.

The previous prime is 378997393. The next prime is 378997429. The reversal of 378997403 is 304799873.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 378997403 - 2⁴ = 378997387 is a prime.

It is not a weakly prime, because it can be changed into another prime (378997903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189498701 + 189498702.

It is an arithmetic number, because the mean of its divisors is an integer number (189498702).

Almost surely, 2^378997403 is an apocalyptic number.

378997403 is a deficient number, since it is larger than the sum of its proper divisors (1).

378997403 is an equidigital number, since it uses as much as digits as its factorization.

378997403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1143072, while the sum is 50.

The square root of 378997403 is about 19467.8556343527. The cubic root of 378997403 is about 723.6780686434.

The spelling of 378997403 in words is "three hundred seventy-eight million, nine hundred ninety-seven thousand, four hundred three".