387532969 has 4 divisors (see below), whose sum is σ = 410329044. Its totient is φ = 364736896.

The previous prime is 387532933. The next prime is 387533011. The reversal of 387532969 is 969235783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 969235783 = 269 ⋅3603107.

It can be written as a sum of positive squares in 2 ways, for example, as 339922969 + 47610000 = 18437^2 + 6900^2 .

It is a cyclic number.

It is not a de Polignac number, because 387532969 - 2²⁷ = 253315241 is a prime.

It is a super-2 number, since 2×387532969² = 300363604123909922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387532919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11398012 + ... + 11398045.

It is an arithmetic number, because the mean of its divisors is an integer number (102582261).

Almost surely, 2^387532969 is an apocalyptic number.

It is an amenable number.

387532969 is a deficient number, since it is larger than the sum of its proper divisors (22796075).

387532969 is a wasteful number, since it uses less digits than its factorization.

387532969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22796074.

The product of its digits is 2449440, while the sum is 52.

The square root of 387532969 is about 19685.8570806556. The cubic root of 387532969 is about 729.0705434948.

The spelling of 387532969 in words is "three hundred eighty-seven million, five hundred thirty-two thousand, nine hundred sixty-nine".