400451103 has 24 divisors (see below), whose sum is σ = 626436720. Its totient is φ = 245041920.

The previous prime is 400451101. The next prime is 400451123. The reversal of 400451103 is 301154004.

It is a happy number.

It is not a de Polignac number, because 400451103 - 2¹ = 400451101 is a prime.

It is a super-2 number, since 2×400451103² = 320722171787833218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400451101) 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, 11383 + ... + 30503.

It is an arithmetic number, because the mean of its divisors is an integer number (26101530).

Almost surely, 2^400451103 is an apocalyptic number.

400451103 is a deficient number, since it is larger than the sum of its proper divisors (225985617).

400451103 is a wasteful number, since it uses less digits than its factorization.

400451103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19319 (or 19316 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 400451103 is about 20011.2743971992. The cubic root of 400451103 is about 737.0831752815.

The spelling of 400451103 in words is "four hundred million, four hundred fifty-one thousand, one hundred three".