99420957 has 12 divisors (see below), whose sum is σ = 144141504. Its totient is φ = 66034440.

The previous prime is 99420949. The next prime is 99421093. The reversal of 99420957 is 75902499.

It is not a de Polignac number, because 99420957 - 2³ = 99420949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99420907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17943 + ... + 22820.

It is an arithmetic number, because the mean of its divisors is an integer number (12011792).

Almost surely, 2^99420957 is an apocalyptic number.

It is an amenable number.

99420957 is a deficient number, since it is larger than the sum of its proper divisors (44720547).

99420957 is a wasteful number, since it uses less digits than its factorization.

99420957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41040 (or 41037 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 99420957 is about 9971.0058168672. The cubic root of 99420957 is about 463.2612554005.

The spelling of 99420957 in words is "ninety-nine million, four hundred twenty thousand, nine hundred fifty-seven".