3509942 has 4 divisors (see below), whose sum is σ = 5264916. Its totient is φ = 1754970.

The previous prime is 3509941. The next prime is 3509951. The reversal of 3509942 is 2499053.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 3509899 and 3509908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3509941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 877484 + ... + 877487.

It is an arithmetic number, because the mean of its divisors is an integer number (1316229).

Almost surely, 2^3509942 is an apocalyptic number.

3509942 is a deficient number, since it is larger than the sum of its proper divisors (1754974).

3509942 is a wasteful number, since it uses less digits than its factorization.

3509942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1754973.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 3509942 is about 1873.4839204007. The cubic root of 3509942 is about 151.9730734851.

The spelling of 3509942 in words is "three million, five hundred nine thousand, nine hundred forty-two".