4023555440 has 40 divisors (see below), whose sum is σ = 9393952320. Its totient is φ = 1602680576.

The previous prime is 4023555397. The next prime is 4023555449. The reversal of 4023555440 is 445553204.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 4023555397 and 4023555406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4023555449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86099 + ... + 124338.

It is an arithmetic number, because the mean of its divisors is an integer number (234848808).

Almost surely, 2^4023555440 is an apocalyptic number.

4023555440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4023555440 is an abundant number, since it is smaller than the sum of its proper divisors (5370396880).

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

4023555440 is a wasteful number, since it uses less digits than its factorization.

4023555440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210689 (or 210683 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 32.

The square root of 4023555440 is about 63431.5019528940. The cubic root of 4023555440 is about 1590.5109495359.

The spelling of 4023555440 in words is "four billion, twenty-three million, five hundred fifty-five thousand, four hundred forty".