99181402 has 4 divisors (see below), whose sum is σ = 148772106. Its totient is φ = 49590700.

The previous prime is 99181399. The next prime is 99181427. The reversal of 99181402 is 20418199.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 98426241 + 755161 = 9921^2 + 869^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24795349 + ... + 24795352.

Almost surely, 2^99181402 is an apocalyptic number.

99181402 is a deficient number, since it is larger than the sum of its proper divisors (49590704).

99181402 is a wasteful number, since it uses less digits than its factorization.

99181402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49590703.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 99181402 is about 9958.9859925597. The cubic root of 99181402 is about 462.8888798449. Note that the first 4 decimals are identical.

The spelling of 99181402 in words is "ninety-nine million, one hundred eighty-one thousand, four hundred two".