738850421 has 2 divisors, whose sum is σ = 738850422. Its totient is φ = 738850420.

The previous prime is 738850403. The next prime is 738850433. The reversal of 738850421 is 124058837.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 736851025 + 1999396 = 27145^2 + 1414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-738850421 is a prime.

It is a super-3 number, since 3×738850421³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is equal to p_38157590 and since 738850421 and 38157590 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (738850121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 369425210 + 369425211.

It is an arithmetic number, because the mean of its divisors is an integer number (369425211).

Almost surely, 2^738850421 is an apocalyptic number.

It is an amenable number.

738850421 is a deficient number, since it is larger than the sum of its proper divisors (1).

738850421 is an equidigital number, since it uses as much as digits as its factorization.

738850421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 738850421 is about 27181.8031226775. The cubic root of 738850421 is about 904.0355489747.

The spelling of 738850421 in words is "seven hundred thirty-eight million, eight hundred fifty thousand, four hundred twenty-one".