862949378 has 4 divisors (see below), whose sum is σ = 1294424070. Its totient is φ = 431474688.

The previous prime is 862949369. The next prime is 862949389. The reversal of 862949378 is 873949268.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 804686689 + 58262689 = 28367^2 + 7633^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215737343 + ... + 215737346.

Almost surely, 2^862949378 is an apocalyptic number.

862949378 is a deficient number, since it is larger than the sum of its proper divisors (431474692).

862949378 is a wasteful number, since it uses less digits than its factorization.

862949378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431474691.

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

The square root of 862949378 is about 29376.0000340414. Note that the first 4 decimals coincide. The cubic root of 862949378 is about 952.0544193934.

The spelling of 862949378 in words is "eight hundred sixty-two million, nine hundred forty-nine thousand, three hundred seventy-eight".