74914921 has 2 divisors, whose sum is σ = 74914922. Its totient is φ = 74914920.

The previous prime is 74914909. The next prime is 74914951. The reversal of 74914921 is 12941947.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55651600 + 19263321 = 7460^2 + 4389^2 .

It is a cyclic number.

It is not a de Polignac number, because 74914921 - 2⁷ = 74914793 is a prime.

It is a super-2 number, since 2×74914921² = 11224490776872482, which contains 22 as substring.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 74914921 parts by 12240 straight cuts.

It is equal to p_4389625 and since 74914921 and 4389625 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (74914951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37457460 + 37457461.

It is an arithmetic number, because the mean of its divisors is an integer number (37457461).

Almost surely, 2^74914921 is an apocalyptic number.

It is an amenable number.

74914921 is a deficient number, since it is larger than the sum of its proper divisors (1).

74914921 is an equidigital number, since it uses as much as digits as its factorization.

74914921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 37.

The square root of 74914921 is about 8655.3406056608. The cubic root of 74914921 is about 421.5568091869.

The spelling of 74914921 in words is "seventy-four million, nine hundred fourteen thousand, nine hundred twenty-one".