4001555432 has 32 divisors (see below), whose sum is σ = 8619678720. Its totient is φ = 1705968960.

The previous prime is 4001555431. The next prime is 4001555449. The reversal of 4001555432 is 2345551004.

It is a junction number, because it is equal to n+sod(n) for n = 4001555395 and 4001555404.

It is not an unprimeable number, because it can be changed into a prime (4001555431) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 176363 + ... + 197754.

It is an arithmetic number, because the mean of its divisors is an integer number (269364960).

Almost surely, 2^4001555432 is an apocalyptic number.

It is an amenable number.

4001555432 is an abundant number, since it is smaller than the sum of its proper divisors (4618123288).

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

4001555432 is a wasteful number, since it uses less digits than its factorization.

4001555432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374321 (or 374317 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 4001555432 is about 63257.8487778394. The cubic root of 4001555432 is about 1587.6067831699.

The spelling of 4001555432 in words is "four billion, one million, five hundred fifty-five thousand, four hundred thirty-two".