3987469409 has 16 divisors (see below), whose sum is σ = 5233044480. Its totient is φ = 2943585360.

The previous prime is 3987469399. The next prime is 3987469433. The reversal of 3987469409 is 9049647893.

It is a cyclic number.

It is not a de Polignac number, because 3987469409 - 2²⁸ = 3719033953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3987429409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1361309 + ... + 1364234.

It is an arithmetic number, because the mean of its divisors is an integer number (327065280).

Almost surely, 2^3987469409 is an apocalyptic number.

It is an amenable number.

3987469409 is a deficient number, since it is larger than the sum of its proper divisors (1245575071).

3987469409 is a wasteful number, since it uses less digits than its factorization.

3987469409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2725580.

The product of its (nonzero) digits is 11757312, while the sum is 59.

The square root of 3987469409 is about 63146.4124792533. The cubic root of 3987469409 is about 1585.7417286237.

The spelling of 3987469409 in words is "three billion, nine hundred eighty-seven million, four hundred sixty-nine thousand, four hundred nine".