342953986 has 4 divisors (see below), whose sum is σ = 514430982. Its totient is φ = 171476992.

The previous prime is 342953959. The next prime is 342953987. The reversal of 342953986 is 689359243.

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

It can be written as a sum of positive squares in only one way, i.e., 342953361 + 625 = 18519^2 + 25^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (342953987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85738495 + ... + 85738498.

Almost surely, 2^342953986 is an apocalyptic number.

342953986 is a deficient number, since it is larger than the sum of its proper divisors (171476996).

342953986 is a wasteful number, since it uses less digits than its factorization.

342953986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171476995.

The product of its digits is 1399680, while the sum is 49.

The square root of 342953986 is about 18519.0168745536. The cubic root of 342953986 is about 699.9686965593.

The spelling of 342953986 in words is "three hundred forty-two million, nine hundred fifty-three thousand, nine hundred eighty-six".