350693993 has 4 divisors (see below), whose sum is σ = 377670468. Its totient is φ = 323717520.

The previous prime is 350693983. The next prime is 350694017. The reversal of 350693993 is 399396053.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 399396053 = 7 ⋅57056579.

It can be written as a sum of positive squares in 2 ways, for example, as 29997529 + 320696464 = 5477^2 + 17908^2 .

It is a cyclic number.

It is not a de Polignac number, because 350693993 - 2⁴ = 350693977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (350693933) 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, 13488218 + ... + 13488243.

It is an arithmetic number, because the mean of its divisors is an integer number (94417617).

Almost surely, 2^350693993 is an apocalyptic number.

It is an amenable number.

350693993 is a deficient number, since it is larger than the sum of its proper divisors (26976475).

350693993 is a wasteful number, since it uses less digits than its factorization.

350693993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26976474.

The product of its (nonzero) digits is 590490, while the sum is 47.

The square root of 350693993 is about 18726.8254917912. The cubic root of 350693993 is about 705.1953538739.

The spelling of 350693993 in words is "three hundred fifty million, six hundred ninety-three thousand, nine hundred ninety-three".