74477489 has 2 divisors, whose sum is σ = 74477490. Its totient is φ = 74477488.

The previous prime is 74477479. The next prime is 74477497. The reversal of 74477489 is 98477447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70694464 + 3783025 = 8408^2 + 1945^2 .

It is a cyclic number.

It is not a de Polignac number, because 74477489 - 2¹² = 74473393 is a prime.

It is not a weakly prime, because it can be changed into another prime (74477479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37238744 + 37238745.

It is an arithmetic number, because the mean of its divisors is an integer number (37238745).

Almost surely, 2^74477489 is an apocalyptic number.

It is an amenable number.

74477489 is a deficient number, since it is larger than the sum of its proper divisors (1).

74477489 is an equidigital number, since it uses as much as digits as its factorization.

74477489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1580544, while the sum is 50.

The square root of 74477489 is about 8630.0341250774. The cubic root of 74477489 is about 420.7347098587.

The spelling of 74477489 in words is "seventy-four million, four hundred seventy-seven thousand, four hundred eighty-nine".