2478349 has 2 divisors, whose sum is σ = 2478350. Its totient is φ = 2478348.

The previous prime is 2478347. The next prime is 2478361. The reversal of 2478349 is 9438742.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1562500 + 915849 = 1250^2 + 957^2 .

It is a cyclic number.

It is not a de Polignac number, because 2478349 - 2¹ = 2478347 is a prime.

It is a super-2 number, since 2×2478349² = 12284427531602, which contains 22 as substring.

Together with 2478347, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 2⁷ + 4⁵ + 7⁶ + 8⁷ + 3⁵ + 4⁹ + 9 .

2478349 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2478347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1239174 + 1239175.

It is an arithmetic number, because the mean of its divisors is an integer number (1239175).

2^2478349 is an apocalyptic number.

It is an amenable number.

2478349 is a deficient number, since it is larger than the sum of its proper divisors (1).

2478349 is an equidigital number, since it uses as much as digits as its factorization.

2478349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 37.

The square root of 2478349 is about 1574.2772945069. The cubic root of 2478349 is about 135.3279452720.

The spelling of 2478349 in words is "two million, four hundred seventy-eight thousand, three hundred forty-nine".