8378489401 has 4 divisors (see below), whose sum is σ = 8380362832. Its totient is φ = 8376615972.

The previous prime is 8378489387. The next prime is 8378489407. The reversal of 8378489401 is 1049848738.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8378489401 - 2⁵ = 8378489369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8378489407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 929991 + ... + 938956.

It is an arithmetic number, because the mean of its divisors is an integer number (2095090708).

Almost surely, 2^8378489401 is an apocalyptic number.

It is an amenable number.

8378489401 is a deficient number, since it is larger than the sum of its proper divisors (1873431).

8378489401 is a wasteful number, since it uses less digits than its factorization.

8378489401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873430.

The product of its (nonzero) digits is 1548288, while the sum is 52.

The square root of 8378489401 is about 91534.0887374753. The cubic root of 8378489401 is about 2031.0560482761.

The spelling of 8378489401 in words is "eight billion, three hundred seventy-eight million, four hundred eighty-nine thousand, four hundred one".