4001111980 has 24 divisors (see below), whose sum is σ = 8404678800. Its totient is φ = 1599998400.

The previous prime is 4001111951. The next prime is 4001111981. The reversal of 4001111980 is 891111004.

It is not an unprimeable number, because it can be changed into a prime (4001111981) 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, 51046 + ... + 102994.

It is an arithmetic number, because the mean of its divisors is an integer number (350194950).

Almost surely, 2^4001111980 is an apocalyptic number.

It is an amenable number.

4001111980 is an abundant number, since it is smaller than the sum of its proper divisors (4403566820).

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

4001111980 is a wasteful number, since it uses less digits than its factorization.

4001111980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55809 (or 55807 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 4001111980 is about 63254.3435662722. The cubic root of 4001111980 is about 1587.5481348581.

Adding to 4001111980 its reverse (891111004), we get a palindrome (4892222984).

The spelling of 4001111980 in words is "four billion, one million, one hundred eleven thousand, nine hundred eighty".