4001440351 has 4 divisors (see below), whose sum is σ = 4130519104. Its totient is φ = 3872361600.

The previous prime is 4001440301. The next prime is 4001440393. The reversal of 4001440351 is 1530441004.

4001440351 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4001440351 - 2⁹ = 4001439839 is a prime.

It is a super-2 number, since 2×4001440351² = 32023049765222006402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001440301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64539330 + ... + 64539391.

It is an arithmetic number, because the mean of its divisors is an integer number (1032629776).

Almost surely, 2^4001440351 is an apocalyptic number.

4001440351 is a deficient number, since it is larger than the sum of its proper divisors (129078753).

4001440351 is a wasteful number, since it uses less digits than its factorization.

4001440351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129078752.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 4001440351 is about 63256.9391529499. The cubic root of 4001440351 is about 1587.5915636608.

Adding to 4001440351 its reverse (1530441004), we get a palindrome (5531881355).

The spelling of 4001440351 in words is "four billion, one million, four hundred forty thousand, three hundred fifty-one".