7400889 has 10 divisors (see below), whose sum is σ = 11055770. Its totient is φ = 4933872.

The previous prime is 7400879. The next prime is 7400891. The reversal of 7400889 is 9880047.

It can be written as a sum of positive squares in only one way, i.e., 7290000 + 110889 = 2700^2 + 333^2 .

It is not a de Polignac number, because 7400889 - 2⁴ = 7400873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7400839) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 45604 + ... + 45765.

It is an arithmetic number, because the mean of its divisors is an integer number (1105577).

Almost surely, 2^7400889 is an apocalyptic number.

It is an amenable number.

7400889 is a deficient number, since it is larger than the sum of its proper divisors (3654881).

7400889 is an equidigital number, since it uses as much as digits as its factorization.

7400889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91381 (or 91372 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 7400889 is about 2720.4574982896. The cubic root of 7400889 is about 194.8773192835.

The spelling of 7400889 in words is "seven million, four hundred thousand, eight hundred eighty-nine".