99671004 has 18 divisors (see below), whose sum is σ = 251946240. Its totient is φ = 33223656.

The previous prime is 99671003. The next prime is 99671021. The reversal of 99671004 is 40017699.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2768639 = 99671004 / (9 + 9 + 6 + 7 + 1 + 0 + 0 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 99671004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99671003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1384284 + ... + 1384355.

Almost surely, 2^99671004 is an apocalyptic number.

It is an amenable number.

99671004 is an abundant number, since it is smaller than the sum of its proper divisors (152275236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99671004 is a wasteful number, since it uses less digits than its factorization.

99671004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2768649 (or 2768644 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 99671004 is about 9983.5366479019. The cubic root of 99671004 is about 463.6493027321.

The spelling of 99671004 in words is "ninety-nine million, six hundred seventy-one thousand, four".