3540439 has 4 divisors (see below), whose sum is σ = 4046224. Its totient is φ = 3034656.

The previous prime is 3540421. The next prime is 3540443. The reversal of 3540439 is 9340453.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9340453 = 1153 ⋅8101.

It is a cyclic number.

It is not a de Polignac number, because 3540439 - 2⁷ = 3540311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3540499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252882 + ... + 252895.

It is an arithmetic number, because the mean of its divisors is an integer number (1011556).

Almost surely, 2^3540439 is an apocalyptic number.

3540439 is a deficient number, since it is larger than the sum of its proper divisors (505785).

3540439 is an equidigital number, since it uses as much as digits as its factorization.

3540439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505784.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 3540439 is about 1881.6054315398. The cubic root of 3540439 is about 152.4119567043.

The spelling of 3540439 in words is "three million, five hundred forty thousand, four hundred thirty-nine".