384209972 has 6 divisors (see below), whose sum is σ = 672367458. Its totient is φ = 192104984.

The previous prime is 384209971. The next prime is 384209983. The reversal of 384209972 is 279902483.

It can be written as a sum of positive squares in only one way, i.e., 356605456 + 27604516 = 18884^2 + 5254^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384209971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48026243 + ... + 48026250.

It is an arithmetic number, because the mean of its divisors is an integer number (112061243).

Almost surely, 2^384209972 is an apocalyptic number.

It is an amenable number.

384209972 is a deficient number, since it is larger than the sum of its proper divisors (288157486).

384209972 is a wasteful number, since it uses less digits than its factorization.

384209972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96052497 (or 96052495 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 384209972 is about 19601.2747544643. The cubic root of 384209972 is about 726.9806937034.

The spelling of 384209972 in words is "three hundred eighty-four million, two hundred nine thousand, nine hundred seventy-two".