4034987391 has 16 divisors (see below), whose sum is σ = 5415120000. Its totient is φ = 2672452128.

The previous prime is 4034987347. The next prime is 4034987419. The reversal of 4034987391 is 1937894304.

It is a happy number.

It is not a de Polignac number, because 4034987391 - 2⁷ = 4034987263 is a prime.

It is a super-2 number, since 2×4034987391² = 32562246491057973762, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4034987391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4034987591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 698985 + ... + 704733.

It is an arithmetic number, because the mean of its divisors is an integer number (338445000).

Almost surely, 2^4034987391 is an apocalyptic number.

4034987391 is a deficient number, since it is larger than the sum of its proper divisors (1380132609).

4034987391 is a wasteful number, since it uses less digits than its factorization.

4034987391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7238.

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 4034987391 is about 63521.5506029253. The cubic root of 4034987391 is about 1592.0158747302.

The spelling of 4034987391 in words is "four billion, thirty-four million, nine hundred eighty-seven thousand, three hundred ninety-one".