384434389690 has 64 divisors (see below), whose sum is σ = 750363264000. Its totient is φ = 140966774784.

The previous prime is 384434389681. The next prime is 384434389697. The reversal of 384434389690 is 96983434483.

It is a super-2 number, since 2×384434389690² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (384434389697) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12130986 + ... + 12162634.

It is an arithmetic number, because the mean of its divisors is an integer number (11724426000).

Almost surely, 2^384434389690 is an apocalyptic number.

384434389690 is a deficient number, since it is larger than the sum of its proper divisors (365928874310).

384434389690 is a wasteful number, since it uses less digits than its factorization.

384434389690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32311.

The product of its (nonzero) digits is 53747712, while the sum is 61.

The spelling of 384434389690 in words is "three hundred eighty-four billion, four hundred thirty-four million, three hundred eighty-nine thousand, six hundred ninety".