400000453400 has 24 divisors (see below), whose sum is σ = 930001054620. Its totient is φ = 160000181280.

The previous prime is 400000453397. The next prime is 400000453471. The reversal of 400000453400 is 4354000004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1000000934 + ... + 1000001333.

Almost surely, 2^400000453400 is an apocalyptic number.

400000453400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400000453400 is an abundant number, since it is smaller than the sum of its proper divisors (530000601220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400000453400 is a wasteful number, since it uses less digits than its factorization.

400000453400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000002283 (or 2000002274 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

Adding to 400000453400 its reverse (4354000004), we get a palindrome (404354453404).

The spelling of 400000453400 in words is "four hundred billion, four hundred fifty-three thousand, four hundred".