74099081 has 4 divisors (see below), whose sum is σ = 84684672. Its totient is φ = 63513492.

The previous prime is 74099071. The next prime is 74099099. The reversal of 74099081 is 18099047.

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.

It is not a de Polignac number, because 74099081 - 2¹⁸ = 73836937 is a prime.

It is a super-2 number, since 2×74099081² = 10981347610089122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74099071) 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, 5292785 + ... + 5292798.

It is an arithmetic number, because the mean of its divisors is an integer number (21171168).

Almost surely, 2^74099081 is an apocalyptic number.

It is an amenable number.

74099081 is a deficient number, since it is larger than the sum of its proper divisors (10585591).

74099081 is a wasteful number, since it uses less digits than its factorization.

74099081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10585590.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 74099081 is about 8608.0823067626. The cubic root of 74099081 is about 420.0209381096.

The spelling of 74099081 in words is "seventy-four million, ninety-nine thousand, eighty-one".