3478009 has 2 divisors, whose sum is σ = 3478010. Its totient is φ = 3478008.

The previous prime is 3477977. The next prime is 3478039. The reversal of 3478009 is 9008743.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3404025 + 73984 = 1845^2 + 272^2 .

It is a cyclic number.

It is not a de Polignac number, because 3478009 - 2⁵ = 3477977 is a prime.

It is a Chen prime.

3478009 is a lucky number.

It is equal to p₂₄₈₇₁₉ and since 3478009 and 248719 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (3478039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1739004 + 1739005.

It is an arithmetic number, because the mean of its divisors is an integer number (1739005).

Almost surely, 2^3478009 is an apocalyptic number.

It is an amenable number.

3478009 is a deficient number, since it is larger than the sum of its proper divisors (1).

3478009 is an equidigital number, since it uses as much as digits as its factorization.

3478009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 3478009 is about 1864.9420902537. The cubic root of 3478009 is about 151.5107915646.

The spelling of 3478009 in words is "three million, four hundred seventy-eight thousand, nine".