384972069 has 4 divisors (see below), whose sum is σ = 513296096. Its totient is φ = 256648044.

The previous prime is 384972061. The next prime is 384972121. The reversal of 384972069 is 960279483.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 384972069 - 2³ = 384972061 is a prime.

It is a super-2 number, since 2×384972069² = 296406987820281522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384972061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64162009 + ... + 64162014.

It is an arithmetic number, because the mean of its divisors is an integer number (128324024).

Almost surely, 2^384972069 is an apocalyptic number.

It is an amenable number.

384972069 is a deficient number, since it is larger than the sum of its proper divisors (128324027).

384972069 is a wasteful number, since it uses less digits than its factorization.

384972069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128324026.

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

The square root of 384972069 is about 19620.7051096539. The cubic root of 384972069 is about 727.4610420678.

The spelling of 384972069 in words is "three hundred eighty-four million, nine hundred seventy-two thousand, sixty-nine".