409349942 has 4 divisors (see below), whose sum is σ = 614024916. Its totient is φ = 204674970.

The previous prime is 409349939. The next prime is 409349957. The reversal of 409349942 is 249943904.

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 = 409349893 and 409349902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102337484 + ... + 102337487.

It is an arithmetic number, because the mean of its divisors is an integer number (153506229).

Almost surely, 2^409349942 is an apocalyptic number.

409349942 is a deficient number, since it is larger than the sum of its proper divisors (204674974).

409349942 is a wasteful number, since it uses less digits than its factorization.

409349942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204674973.

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 409349942 is about 20232.3983254581. The cubic root of 409349942 is about 742.5030541731.

The spelling of 409349942 in words is "four hundred nine million, three hundred forty-nine thousand, nine hundred forty-two".