390223601 has 4 divisors (see below), whose sum is σ = 390309492. Its totient is φ = 390137712.

The previous prime is 390223591. The next prime is 390223619. The reversal of 390223601 is 106322093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 106322093 = 1693 ⋅62801.

It can be written as a sum of positive squares in 2 ways, for example, as 323964001 + 66259600 = 17999^2 + 8140^2 .

It is a cyclic number.

It is not a de Polignac number, because 390223601 - 2²² = 386029297 is a prime.

It is a super-3 number, since 3×390223601³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390223901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35726 + ... + 45351.

It is an arithmetic number, because the mean of its divisors is an integer number (97577373).

Almost surely, 2^390223601 is an apocalyptic number.

It is an amenable number.

390223601 is a deficient number, since it is larger than the sum of its proper divisors (85891).

390223601 is an equidigital number, since it uses as much as digits as its factorization.

390223601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85890.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 390223601 is about 19754.0780852967. The cubic root of 390223601 is about 730.7539598761.

Adding to 390223601 its reverse (106322093), we get a palindrome (496545694).

The spelling of 390223601 in words is "three hundred ninety million, two hundred twenty-three thousand, six hundred one".