99951147 has 24 divisors (see below), whose sum is σ = 146946800. Its totient is φ = 65458368.

The previous prime is 99951121. The next prime is 99951179. The reversal of 99951147 is 74115999.

99951147 is a `hidden beast` number, since 9 + 99 + 511 + 47 = 666.

It is not a de Polignac number, because 99951147 - 2⁶ = 99951083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99952147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135993 + ... + 136725.

Almost surely, 2^99951147 is an apocalyptic number.

99951147 is a deficient number, since it is larger than the sum of its proper divisors (46995653).

99951147 is a wasteful number, since it uses less digits than its factorization.

99951147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987 (or 984 counting only the distinct ones).

The product of its digits is 102060, while the sum is 45.

The square root of 99951147 is about 9997.5570516002. The cubic root of 99951147 is about 464.0832858696.

The spelling of 99951147 in words is "ninety-nine million, nine hundred fifty-one thousand, one hundred forty-seven".