1523984409 has 16 divisors (see below), whose sum is σ = 2262649600. Its totient is φ = 1013786928.

The previous prime is 1523984381. The next prime is 1523984417. The reversal of 1523984409 is 9044893251.

1523984409 is a `hidden beast` number, since 1 + 5 + 239 + 8 + 4 + 409 = 666.

It is not a de Polignac number, because 1523984409 - 2⁹ = 1523983897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1523984909) 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, 48454 + ... + 73455.

It is an arithmetic number, because the mean of its divisors is an integer number (141415600).

Almost surely, 2^1523984409 is an apocalyptic number.

It is an amenable number.

1523984409 is a deficient number, since it is larger than the sum of its proper divisors (738665191).

1523984409 is a wasteful number, since it uses less digits than its factorization.

1523984409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122381 (or 122375 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 1523984409 is about 39038.2429035939. The cubic root of 1523984409 is about 1150.7831864789.

The spelling of 1523984409 in words is "one billion, five hundred twenty-three million, nine hundred eighty-four thousand, four hundred nine".