99349251 has 4 divisors (see below), whose sum is σ = 132465672. Its totient is φ = 66232832.

The previous prime is 99349247. The next prime is 99349279. The reversal of 99349251 is 15294399.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15294399 = 3 ⋅5098133.

It is a cyclic number.

It is not a de Polignac number, because 99349251 - 2² = 99349247 is a prime.

It is a super-2 number, since 2×99349251² = 19740547348522002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99349291) 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, 16558206 + ... + 16558211.

It is an arithmetic number, because the mean of its divisors is an integer number (33116418).

Almost surely, 2^99349251 is an apocalyptic number.

99349251 is a deficient number, since it is larger than the sum of its proper divisors (33116421).

99349251 is a wasteful number, since it uses less digits than its factorization.

99349251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33116420.

The product of its digits is 87480, while the sum is 42.

The square root of 99349251 is about 9967.4094427790. The cubic root of 99349251 is about 463.1498550078.

The spelling of 99349251 in words is "ninety-nine million, three hundred forty-nine thousand, two hundred fifty-one".