629464921 has 2 divisors, whose sum is σ = 629464922. Its totient is φ = 629464920.

The previous prime is 629464909. The next prime is 629464931. The reversal of 629464921 is 129464926.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 616826896 + 12638025 = 24836^2 + 3555^2 .

It is a cyclic number.

It is not a de Polignac number, because 629464921 - 2⁷ = 629464793 is a prime.

It is not a weakly prime, because it can be changed into another prime (629464931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314732460 + 314732461.

It is an arithmetic number, because the mean of its divisors is an integer number (314732461).

Almost surely, 2^629464921 is an apocalyptic number.

It is an amenable number.

629464921 is a deficient number, since it is larger than the sum of its proper divisors (1).

629464921 is an equidigital number, since it uses as much as digits as its factorization.

629464921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 43.

The square root of 629464921 is about 25089.1395029802. The cubic root of 629464921 is about 857.0191195759.

The spelling of 629464921 in words is "six hundred twenty-nine million, four hundred sixty-four thousand, nine hundred twenty-one".