99278011 has 8 divisors (see below), whose sum is σ = 120134880. Its totient is φ = 80089728.

The previous prime is 99277979. The next prime is 99278033. The reversal of 99278011 is 11087299.

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 99278011 - 2⁵ = 99277979 is a prime.

It is a super-2 number, since 2×99278011² = 19712246936232242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99278041) 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, 417016 + ... + 417253.

It is an arithmetic number, because the mean of its divisors is an integer number (15016860).

Almost surely, 2^99278011 is an apocalyptic number.

99278011 is a deficient number, since it is larger than the sum of its proper divisors (20856869).

99278011 is a wasteful number, since it uses less digits than its factorization.

99278011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834293.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 99278011 is about 9963.8351552000. The cubic root of 99278011 is about 463.0391254856.

It can be divided in two parts, 992 and 78011, that added together give a triangular number (79003 = T₃₉₇).

The spelling of 99278011 in words is "ninety-nine million, two hundred seventy-eight thousand, eleven".