384623551 has 6 divisors (see below), whose sum is σ = 416486040. Its totient is φ = 355036968.

The previous prime is 384623531. The next prime is 384623581. The reversal of 384623551 is 155326483.

It is not a de Polignac number, because 384623551 - 2⁷ = 384623423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 384623551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384623531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1137771 + ... + 1138108.

It is an arithmetic number, because the mean of its divisors is an integer number (69414340).

Almost surely, 2^384623551 is an apocalyptic number.

384623551 is a deficient number, since it is larger than the sum of its proper divisors (31862489).

384623551 is a wasteful number, since it uses less digits than its factorization.

384623551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2275905 (or 2275892 counting only the distinct ones).

The product of its digits is 86400, while the sum is 37.

The square root of 384623551 is about 19611.8217154858. The cubic root of 384623551 is about 727.2414505399.

The spelling of 384623551 in words is "three hundred eighty-four million, six hundred twenty-three thousand, five hundred fifty-one".