7940219 has 8 divisors (see below), whose sum is σ = 9131520. Its totient is φ = 6763176.

The previous prime is 7940209. The next prime is 7940239. The reversal of 7940219 is 9120497.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7940219 - 2⁸ = 7939963 is a prime.

It is a super-2 number, since 2×7940219² = 126094155535922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7940209) 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 7 ways as a sum of consecutive naturals, for example, 2339 + ... + 4620.

It is an arithmetic number, because the mean of its divisors is an integer number (1141440).

Almost surely, 2^7940219 is an apocalyptic number.

7940219 is a deficient number, since it is larger than the sum of its proper divisors (1191301).

7940219 is a wasteful number, since it uses less digits than its factorization.

7940219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7129.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 7940219 is about 2817.8394205490. The cubic root of 7940219 is about 199.5005789310.

The spelling of 7940219 in words is "seven million, nine hundred forty thousand, two hundred nineteen".