99154947 has 8 divisors (see below), whose sum is σ = 135281344. Its totient is φ = 64565928.

The previous prime is 99154921. The next prime is 99154961. The reversal of 99154947 is 74945199.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99154947 - 2⁶ = 99154883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99154896 and 99154905.

It is not an unprimeable number, because it can be changed into a prime (99154967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384193 + ... + 384450.

It is an arithmetic number, because the mean of its divisors is an integer number (16910168).

Almost surely, 2^99154947 is an apocalyptic number.

99154947 is a deficient number, since it is larger than the sum of its proper divisors (36126397).

99154947 is a wasteful number, since it uses less digits than its factorization.

99154947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768689.

The product of its digits is 408240, while the sum is 48.

The square root of 99154947 is about 9957.6577065091. The cubic root of 99154947 is about 462.8477201987.

The spelling of 99154947 in words is "ninety-nine million, one hundred fifty-four thousand, nine hundred forty-seven".