99278141 has 8 divisors (see below), whose sum is σ = 102415320. Its totient is φ = 96164928.

The previous prime is 99278119. The next prime is 99278149. The reversal of 99278141 is 14187299.

99278141 = 7045² + 7046².

It can be written as a sum of positive squares in 4 ways, for example, as 24542116 + 74736025 = 4954^2 + 8645^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99278141 - 2⁶ = 99278077 is a prime.

It is a super-2 number, since 2×99278141² = 19712298560831762, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99278149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2615 + ... + 14331.

It is an arithmetic number, because the mean of its divisors is an integer number (12801915).

Almost surely, 2^99278141 is an apocalyptic number.

99278141 is the 7046-th centered square number.

It is an amenable number.

99278141 is a deficient number, since it is larger than the sum of its proper divisors (3137179).

99278141 is a wasteful number, since it uses less digits than its factorization.

99278141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11983.

The product of its digits is 36288, while the sum is 41.

The square root of 99278141 is about 9963.8416787904. The cubic root of 99278141 is about 463.0393275950.

The spelling of 99278141 in words is "ninety-nine million, two hundred seventy-eight thousand, one hundred forty-one".