286400979 has 12 divisors (see below), whose sum is σ = 424871616. Its totient is φ = 185773392.

The previous prime is 286400957. The next prime is 286400987. The reversal of 286400979 is 979004682.

It is a happy number.

It is not a de Polignac number, because 286400979 - 2¹⁶ = 286335443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (286400929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 429699 + ... + 430364.

It is an arithmetic number, because the mean of its divisors is an integer number (35405968).

Almost surely, 2^286400979 is an apocalyptic number.

286400979 is a deficient number, since it is larger than the sum of its proper divisors (138470637).

286400979 is a wasteful number, since it uses less digits than its factorization.

286400979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860106 (or 860103 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 286400979 is about 16923.3855655421. The cubic root of 286400979 is about 659.1609931161.

The spelling of 286400979 in words is "two hundred eighty-six million, four hundred thousand, nine hundred seventy-nine".