400154430 has 32 divisors (see below), whose sum is σ = 1034246304. Its totient is φ = 98499456.

The previous prime is 400154429. The next prime is 400154453. The reversal of 400154430 is 34451004.

It is a junction number, because it is equal to n+sod(n) for n = 400154397 and 400154406.

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, 512629 + ... + 513408.

It is an arithmetic number, because the mean of its divisors is an integer number (32320197).

Almost surely, 2^400154430 is an apocalyptic number.

400154430 is an abundant number, since it is smaller than the sum of its proper divisors (634091874).

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

400154430 is a wasteful number, since it uses less digits than its factorization.

400154430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026060.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 400154430 is about 20003.8603774372. The cubic root of 400154430 is about 736.9011083588.

The spelling of 400154430 in words is "four hundred million, one hundred fifty-four thousand, four hundred thirty".