99961357 has 4 divisors (see below), whose sum is σ = 100560096. Its totient is φ = 99362620.

The previous prime is 99961333. The next prime is 99961361. The reversal of 99961357 is 75316999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75316999 = 103 ⋅731233.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99961357 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99961357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99961327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299119 + ... + 299452.

It is an arithmetic number, because the mean of its divisors is an integer number (25140024).

Almost surely, 2^99961357 is an apocalyptic number.

It is an amenable number.

99961357 is a deficient number, since it is larger than the sum of its proper divisors (598739).

99961357 is a wasteful number, since it uses less digits than its factorization.

99961357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598738.

The product of its digits is 459270, while the sum is 49.

The square root of 99961357 is about 9998.0676633037. The cubic root of 99961357 is about 464.0990873525.

The spelling of 99961357 in words is "ninety-nine million, nine hundred sixty-one thousand, three hundred fifty-seven".