74523949 has 2 divisors, whose sum is σ = 74523950. Its totient is φ = 74523948.

The previous prime is 74523941. The next prime is 74523959. The reversal of 74523949 is 94932547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39501225 + 35022724 = 6285^2 + 5918^2 .

It is an emirp because it is prime and its reverse (94932547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74523949 - 2³ = 74523941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74523941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37261974 + 37261975.

It is an arithmetic number, because the mean of its divisors is an integer number (37261975).

Almost surely, 2^74523949 is an apocalyptic number.

It is an amenable number.

74523949 is a deficient number, since it is larger than the sum of its proper divisors (1).

74523949 is an equidigital number, since it uses as much as digits as its factorization.

74523949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 43.

The square root of 74523949 is about 8632.7254676608. The cubic root of 74523949 is about 420.8221782184.

The spelling of 74523949 in words is "seventy-four million, five hundred twenty-three thousand, nine hundred forty-nine".