99671156 has 12 divisors (see below), whose sum is σ = 187841892. Its totient is φ = 46002048.

The previous prime is 99671129. The next prime is 99671171. The reversal of 99671156 is 65117699.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16679056 + 82992100 = 4084^2 + 9110^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 958325 + ... + 958428.

It is an arithmetic number, because the mean of its divisors is an integer number (15653491).

Almost surely, 2^99671156 is an apocalyptic number.

It is an amenable number.

99671156 is a deficient number, since it is larger than the sum of its proper divisors (88170736).

99671156 is a wasteful number, since it uses less digits than its factorization.

99671156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916770 (or 1916768 counting only the distinct ones).

The product of its digits is 102060, while the sum is 44.

The square root of 99671156 is about 9983.5442604318. The cubic root of 99671156 is about 463.6495384231.

It can be divided in two parts, 99671 and 156, that multiplied together give a triangular number (15548676 = T₅₅₇₆).

The spelling of 99671156 in words is "ninety-nine million, six hundred seventy-one thousand, one hundred fifty-six".