394790449 has 4 divisors (see below), whose sum is σ = 394887780. Its totient is φ = 394693120.

The previous prime is 394790447. The next prime is 394790467. The reversal of 394790449 is 944097493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 944097493 = 89 ⋅10607837.

It can be written as a sum of positive squares in 2 ways, for example, as 391762849 + 3027600 = 19793^2 + 1740^2 .

It is a cyclic number.

It is not a de Polignac number, because 394790449 - 2¹ = 394790447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394790443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42304 + ... + 50785.

It is an arithmetic number, because the mean of its divisors is an integer number (98721945).

Almost surely, 2^394790449 is an apocalyptic number.

It is an amenable number.

394790449 is a deficient number, since it is larger than the sum of its proper divisors (97331).

394790449 is an equidigital number, since it uses as much as digits as its factorization.

394790449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97330.

The product of its (nonzero) digits is 979776, while the sum is 49.

The square root of 394790449 is about 19869.3343874424. The cubic root of 394790449 is about 733.5936202529.

The spelling of 394790449 in words is "three hundred ninety-four million, seven hundred ninety thousand, four hundred forty-nine".