7140447 has 32 divisors (see below), whose sum is σ = 11520000. Its totient is φ = 4354560.

The previous prime is 7140443. The next prime is 7140457. The reversal of 7140447 is 7440417.

7140447 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7140447 - 2² = 7140443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 7140447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7140443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15679 + ... + 16127.

It is an arithmetic number, because the mean of its divisors is an integer number (360000).

Almost surely, 2^7140447 is an apocalyptic number.

7140447 is a deficient number, since it is larger than the sum of its proper divisors (4379553).

7140447 is a wasteful number, since it uses less digits than its factorization.

7140447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508 (or 502 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 7140447 is about 2672.1614846412. The cubic root of 7140447 is about 192.5640153655.

The spelling of 7140447 in words is "seven million, one hundred forty thousand, four hundred forty-seven".