74988149 has 2 divisors, whose sum is σ = 74988150. Its totient is φ = 74988148.

The previous prime is 74988131. The next prime is 74988169. The reversal of 74988149 is 94188947.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74822500 + 165649 = 8650^2 + 407^2 .

It is a cyclic number.

It is not a de Polignac number, because 74988149 - 2²⁰ = 73939573 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 74988097 and 74988106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74988169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37494074 + 37494075.

It is an arithmetic number, because the mean of its divisors is an integer number (37494075).

Almost surely, 2^74988149 is an apocalyptic number.

It is an amenable number.

74988149 is a deficient number, since it is larger than the sum of its proper divisors (1).

74988149 is an equidigital number, since it uses as much as digits as its factorization.

74988149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 50.

The square root of 74988149 is about 8659.5697930094. The cubic root of 74988149 is about 421.6941192130.

The spelling of 74988149 in words is "seventy-four million, nine hundred eighty-eight thousand, one hundred forty-nine".