734629921 has 2 divisors, whose sum is σ = 734629922. Its totient is φ = 734629920.

The previous prime is 734629897. The next prime is 734629963. The reversal of 734629921 is 129926437.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 558802321 + 175827600 = 23639^2 + 13260^2 .

It is a cyclic number.

It is not a de Polignac number, because 734629921 - 2⁹ = 734629409 is a prime.

It is a super-2 number, since 2×734629921² = 1079362241656932482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (734629981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 367314960 + 367314961.

It is an arithmetic number, because the mean of its divisors is an integer number (367314961).

Almost surely, 2^734629921 is an apocalyptic number.

It is an amenable number.

734629921 is a deficient number, since it is larger than the sum of its proper divisors (1).

734629921 is an equidigital number, since it uses as much as digits as its factorization.

734629921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 43.

The square root of 734629921 is about 27104.0572793078. The cubic root of 734629921 is about 902.3109012120.

The spelling of 734629921 in words is "seven hundred thirty-four million, six hundred twenty-nine thousand, nine hundred twenty-one".