8400438495 has 24 divisors (see below), whose sum is σ = 14675421696. Its totient is φ = 4444953408.

The previous prime is 8400438491. The next prime is 8400438533. The reversal of 8400438495 is 5948340048.

It is a happy number.

It is not a de Polignac number, because 8400438495 - 2² = 8400438491 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 8400438495.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8400438491) 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 23 ways as a sum of consecutive naturals, for example, 729232 + ... + 740661.

It is an arithmetic number, because the mean of its divisors is an integer number (611475904).

Almost surely, 2^8400438495 is an apocalyptic number.

8400438495 is a deficient number, since it is larger than the sum of its proper divisors (6274983201).

8400438495 is a wasteful number, since it uses less digits than its factorization.

8400438495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470031 (or 1470028 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 8400438495 is about 91653.9060542430. The cubic root of 8400438495 is about 2032.8280848174.

The spelling of 8400438495 in words is "eight billion, four hundred million, four hundred thirty-eight thousand, four hundred ninety-five".