349863658 has 4 divisors (see below), whose sum is σ = 524795490. Its totient is φ = 174931828.

The previous prime is 349863643. The next prime is 349863659. The reversal of 349863658 is 856368943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 856368943 = 271 ⋅3160033.

It can be written as a sum of positive squares in only one way, i.e., 182601169 + 167262489 = 13513^2 + 12933^2 .

It is not an unprimeable number, because it can be changed into a prime (349863659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87465913 + ... + 87465916.

Almost surely, 2^349863658 is an apocalyptic number.

349863658 is a deficient number, since it is larger than the sum of its proper divisors (174931832).

349863658 is a wasteful number, since it uses less digits than its factorization.

349863658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174931831.

The product of its digits is 3732480, while the sum is 52.

The square root of 349863658 is about 18704.6426857077. The cubic root of 349863658 is about 704.6383524831.

The spelling of 349863658 in words is "three hundred forty-nine million, eight hundred sixty-three thousand, six hundred fifty-eight".