400545430 has 32 divisors (see below), whose sum is σ = 748813824. Its totient is φ = 154145376.

The previous prime is 400545371. The next prime is 400545487. The reversal of 400545430 is 34545004.

It is a junction number, because it is equal to n+sod(n) for n = 400545395 and 400545404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21859 + ... + 35761.

It is an arithmetic number, because the mean of its divisors is an integer number (23400432).

Almost surely, 2^400545430 is an apocalyptic number.

400545430 is a deficient number, since it is larger than the sum of its proper divisors (348268394).

400545430 is a wasteful number, since it uses less digits than its factorization.

400545430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14020.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 400545430 is about 20013.6311048245. The cubic root of 400545430 is about 737.1410445077.

The spelling of 400545430 in words is "four hundred million, five hundred forty-five thousand, four hundred thirty".