8400454 has 4 divisors (see below), whose sum is σ = 12600684. Its totient is φ = 4200226.

The previous prime is 8400439. The next prime is 8400461. The reversal of 8400454 is 4540048.

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

It is a super-2 number, since 2×8400454² = 141135254812232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2100112 + ... + 2100115.

It is an arithmetic number, because the mean of its divisors is an integer number (3150171).

Almost surely, 2^8400454 is an apocalyptic number.

8400454 is a deficient number, since it is larger than the sum of its proper divisors (4200230).

8400454 is a wasteful number, since it uses less digits than its factorization.

8400454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4200229.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 8400454 is about 2898.3536706206. The cubic root of 8400454 is about 203.2829335505.

The spelling of 8400454 in words is "eight million, four hundred thousand, four hundred fifty-four".