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74004989 is a prime number
BaseRepresentation
bin1000110100100…
…11100111111101
312011020211202112
410122103213331
5122421124424
611202103405
71556013662
oct432234775
9164224675
1074004989
1138857053
122094ab65
1312441746
149b85a69
15676c60e
hex46939fd

74004989 has 2 divisors, whose sum is σ = 74004990. Its totient is φ = 74004988.

The previous prime is 74004977. The next prime is 74005027. The reversal of 74004989 is 98940047.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73239364 + 765625 = 8558^2 + 875^2 .

It is an emirp because it is prime and its reverse (98940047) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-74004989 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74004919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37002494 + 37002495.

It is an arithmetic number, because the mean of its divisors is an integer number (37002495).

Almost surely, 274004989 is an apocalyptic number.

It is an amenable number.

74004989 is a deficient number, since it is larger than the sum of its proper divisors (1).

74004989 is an equidigital number, since it uses as much as digits as its factorization.

74004989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 74004989 is about 8602.6152418901. The cubic root of 74004989 is about 419.8430800790.

The spelling of 74004989 in words is "seventy-four million, four thousand, nine hundred eighty-nine".