8400963 has 4 divisors (see below), whose sum is σ = 11201288. Its totient is φ = 5600640.

The previous prime is 8400943. The next prime is 8400967. The reversal of 8400963 is 3690048.

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

It is not a de Polignac number, because 8400963 - 2¹⁶ = 8335427 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8400963.

It is not an unprimeable number, because it can be changed into a prime (8400967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1400158 + ... + 1400163.

It is an arithmetic number, because the mean of its divisors is an integer number (2800322).

Almost surely, 2^8400963 is an apocalyptic number.

8400963 is a deficient number, since it is larger than the sum of its proper divisors (2800325).

8400963 is a wasteful number, since it uses less digits than its factorization.

8400963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800324.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 8400963 is about 2898.4414777601. The cubic root of 8400963 is about 203.2870392383.

Subtracting from 8400963 its reverse (3690048), we obtain a triangular number (4710915 = T₃₀₆₉).

The spelling of 8400963 in words is "eight million, four hundred thousand, nine hundred sixty-three".