7140889 has 16 divisors (see below), whose sum is σ = 8512000. Its totient is φ = 5863104.

The previous prime is 7140883. The next prime is 7140899. The reversal of 7140889 is 9880417.

It is a cyclic number.

It is not a de Polignac number, because 7140889 - 2⁵ = 7140857 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (7140883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20287 + ... + 20635.

It is an arithmetic number, because the mean of its divisors is an integer number (532000).

Almost surely, 2^7140889 is an apocalyptic number.

7140889 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

It is an amenable number.

7140889 is a deficient number, since it is larger than the sum of its proper divisors (1371111).

7140889 is a wasteful number, since it uses less digits than its factorization.

7140889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 7140889 is about 2672.2441879439. The cubic root of 7140889 is about 192.5679885779.

The spelling of 7140889 in words is "seven million, one hundred forty thousand, eight hundred eighty-nine".