7890672444 has 12 divisors (see below), whose sum is σ = 18411569064. Its totient is φ = 2630224144.

The previous prime is 7890672421. The next prime is 7890672457. The reversal of 7890672444 is 4442760987.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-4 number, since 4×7890672444⁴ (a number of 41 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328778007 + ... + 328778030.

It is an arithmetic number, because the mean of its divisors is an integer number (1534297422).

Almost surely, 2^7890672444 is an apocalyptic number.

It is an amenable number.

7890672444 is an abundant number, since it is smaller than the sum of its proper divisors (10520896620).

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

7890672444 is a wasteful number, since it uses less digits than its factorization.

7890672444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657556044 (or 657556042 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 51.

The square root of 7890672444 is about 88829.4570736532. The cubic root of 7890672444 is about 1990.8475505576.

The spelling of 7890672444 in words is "seven billion, eight hundred ninety million, six hundred seventy-two thousand, four hundred forty-four".