7089887421 has 8 divisors (see below), whose sum is σ = 10503536960. Its totient is φ = 4726591596.

The previous prime is 7089887419. The next prime is 7089887437. The reversal of 7089887421 is 1247889807.

It is a happy number.

It is not a de Polignac number, because 7089887421 - 2¹ = 7089887419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7089887821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131294185 + ... + 131294238.

It is an arithmetic number, because the mean of its divisors is an integer number (1312942120).

Almost surely, 2^7089887421 is an apocalyptic number.

It is an amenable number.

7089887421 is a deficient number, since it is larger than the sum of its proper divisors (3413649539).

7089887421 is a wasteful number, since it uses less digits than its factorization.

7089887421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262588432 (or 262588426 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 54.

The square root of 7089887421 is about 84201.4692330247. The cubic root of 7089887421 is about 1921.0844045094.

The spelling of 7089887421 in words is "seven billion, eighty-nine million, eight hundred eighty-seven thousand, four hundred twenty-one".