7900389000 has 256 divisors, whose sum is σ = 31301337600. Its totient is φ = 1805760000.

The previous prime is 7900388981. The next prime is 7900389047. The reversal of 7900389000 is 9830097.

It is a super-2 number, since 2×7900389000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 168100 + ... + 209900.

It is an arithmetic number, because the mean of its divisors is an integer number (122270850).

Almost surely, 2^7900389000 is an apocalyptic number.

7900389000 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7900389000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15650668800).

7900389000 is an abundant number, since it is smaller than the sum of its proper divisors (23400948600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7900389000 is a wasteful number, since it uses less digits than its factorization.

7900389000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41838 (or 41818 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 7900389000 is about 88884.1324421857. The cubic root of 7900389000 is about 1991.6643904045.

It can be divided in two parts, 7900 and 389000, that added together give a square (396900 = 630²).

The spelling of 7900389000 in words is "seven billion, nine hundred million, three hundred eighty-nine thousand".