747403421 has 2 divisors, whose sum is σ = 747403422. Its totient is φ = 747403420.

The previous prime is 747403409. The next prime is 747403427. The reversal of 747403421 is 124304747.

747403421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 564775225 + 182628196 = 23765^2 + 13514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-747403421 is a prime.

It is a super-2 number, since 2×747403421² = 1117223747445006482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (747403427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373701710 + 373701711.

It is an arithmetic number, because the mean of its divisors is an integer number (373701711).

Almost surely, 2^747403421 is an apocalyptic number.

It is an amenable number.

747403421 is a deficient number, since it is larger than the sum of its proper divisors (1).

747403421 is an equidigital number, since it uses as much as digits as its factorization.

747403421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 747403421 is about 27338.6799425283. The cubic root of 747403421 is about 907.5105735828.

The spelling of 747403421 in words is "seven hundred forty-seven million, four hundred three thousand, four hundred twenty-one".