3702409 has 2 divisors, whose sum is σ = 3702410. Its totient is φ = 3702408.

The previous prime is 3702389. The next prime is 3702443. The reversal of 3702409 is 9042073.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3504384 + 198025 = 1872^2 + 445^2 .

It is a cyclic number.

It is not a de Polignac number, because 3702409 - 2¹³ = 3694217 is a prime.

It is an Ulam number.

3702409 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3702449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1851204 + 1851205.

It is an arithmetic number, because the mean of its divisors is an integer number (1851205).

Almost surely, 2^3702409 is an apocalyptic number.

It is an amenable number.

3702409 is a deficient number, since it is larger than the sum of its proper divisors (1).

3702409 is an equidigital number, since it uses as much as digits as its factorization.

3702409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 3702409 is about 1924.1644940077. The cubic root of 3702409 is about 154.7015972392.

The spelling of 3702409 in words is "three million, seven hundred two thousand, four hundred nine".