74921489 has 8 divisors (see below), whose sum is σ = 76531392. Its totient is φ = 73318960.

The previous prime is 74921461. The next prime is 74921537. The reversal of 74921489 is 98412947.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74921489 - 2¹² = 74917393 is a prime.

It is a super-2 number, since 2×74921489² = 11226459027954242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74921089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21884 + ... + 25074.

It is an arithmetic number, because the mean of its divisors is an integer number (9566424).

Almost surely, 2^74921489 is an apocalyptic number.

It is an amenable number.

74921489 is a deficient number, since it is larger than the sum of its proper divisors (1609903).

74921489 is a wasteful number, since it uses less digits than its factorization.

74921489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3687.

The product of its digits is 145152, while the sum is 44.

The square root of 74921489 is about 8655.7200162667. The cubic root of 74921489 is about 421.5691285139.

The spelling of 74921489 in words is "seventy-four million, nine hundred twenty-one thousand, four hundred eighty-nine".