74197149 has 32 divisors (see below), whose sum is σ = 112030464. Its totient is φ = 43338240.

The previous prime is 74197121. The next prime is 74197157. The reversal of 74197149 is 94179147.

It is not a de Polignac number, because 74197149 - 2¹⁵ = 74164381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74197149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74197159) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162129 + ... + 162585.

It is an arithmetic number, because the mean of its divisors is an integer number (3500952).

Almost surely, 2^74197149 is an apocalyptic number.

It is an amenable number.

74197149 is a deficient number, since it is larger than the sum of its proper divisors (37833315).

74197149 is a wasteful number, since it uses less digits than its factorization.

74197149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677.

The product of its digits is 63504, while the sum is 42.

The square root of 74197149 is about 8613.7766978254. The cubic root of 74197149 is about 420.2061516310.

The spelling of 74197149 in words is "seventy-four million, one hundred ninety-seven thousand, one hundred forty-nine".