400454445 has 8 divisors (see below), whose sum is σ = 640727136. Its totient is φ = 213575696.

The previous prime is 400454437. The next prime is 400454471. The reversal of 400454445 is 544454004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400454445 - 2³ = 400454437 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 13348467 + ... + 13348496.

It is an arithmetic number, because the mean of its divisors is an integer number (80090892).

Almost surely, 2^400454445 is an apocalyptic number.

It is an amenable number.

400454445 is a deficient number, since it is larger than the sum of its proper divisors (240272691).

400454445 is a wasteful number, since it uses less digits than its factorization.

400454445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26696971.

The product of its (nonzero) digits is 25600, while the sum is 30.

The square root of 400454445 is about 20011.3578999527. The cubic root of 400454445 is about 737.0852257400.

The spelling of 400454445 in words is "four hundred million, four hundred fifty-four thousand, four hundred forty-five".