2609408 has 18 divisors (see below), whose sum is σ = 5209134. Its totient is φ = 1304576.

The previous prime is 2609407. The next prime is 2609413. The reversal of 2609408 is 8049062.

It can be written as a sum of positive squares in only one way, i.e., 2408704 + 200704 = 1552^2 + 448^2 .

It is a super-2 number, since 2×2609408² = 13618020220928, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2609401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4841 + ... + 5352.

2^2609408 is an apocalyptic number.

It is an amenable number.

2609408 is a deficient number, since it is larger than the sum of its proper divisors (2599726).

2609408 is an equidigital number, since it uses as much as digits as its factorization.

2609408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10209 (or 10195 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 2609408 is about 1615.3662123494. The cubic root of 2609408 is about 137.6725415229.

It can be divided in two parts, 2 and 609408, that multiplied together give a square (1218816 = 1104²).

The spelling of 2609408 in words is "two million, six hundred nine thousand, four hundred eight".