220440379 has 2 divisors, whose sum is σ = 220440380. Its totient is φ = 220440378.

The previous prime is 220440347. The next prime is 220440383. The reversal of 220440379 is 973044022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220440379 - 2⁵ = 220440347 is a prime.

It is a super-3 number, since 3×220440379³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220440379.

It is not a weakly prime, because it can be changed into another prime (220440329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110220189 + 110220190.

It is an arithmetic number, because the mean of its divisors is an integer number (110220190).

Almost surely, 2^220440379 is an apocalyptic number.

220440379 is a deficient number, since it is larger than the sum of its proper divisors (1).

220440379 is an equidigital number, since it uses as much as digits as its factorization.

220440379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 220440379 is about 14847.2347256989. The cubic root of 220440379 is about 604.0836059215.

The spelling of 220440379 in words is "two hundred twenty million, four hundred forty thousand, three hundred seventy-nine".