350420991 has 4 divisors (see below), whose sum is σ = 467227992. Its totient is φ = 233613992.

The previous prime is 350420981. The next prime is 350420999. The reversal of 350420991 is 199024053.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 199024053 = 3 ⋅66341351.

It is a cyclic number.

It is not a de Polignac number, because 350420991 - 2⁶ = 350420927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (350420999) 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, 58403496 + ... + 58403501.

It is an arithmetic number, because the mean of its divisors is an integer number (116806998).

Almost surely, 2^350420991 is an apocalyptic number.

350420991 is a deficient number, since it is larger than the sum of its proper divisors (116807001).

350420991 is a wasteful number, since it uses less digits than its factorization.

350420991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116807000.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 350420991 is about 18719.5350102507. The cubic root of 350420991 is about 705.0123170727.

The spelling of 350420991 in words is "three hundred fifty million, four hundred twenty thousand, nine hundred ninety-one".