629400929 has 2 divisors, whose sum is σ = 629400930. Its totient is φ = 629400928.

The previous prime is 629400913. The next prime is 629400931. The reversal of 629400929 is 929004926.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 467424400 + 161976529 = 21620^2 + 12727^2 .

It is a cyclic number.

It is not a de Polignac number, because 629400929 - 2⁴ = 629400913 is a prime.

It is a super-2 number, since 2×629400929² = 792291058852126082, which contains 22 as substring.

Together with 629400931, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (629400029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314700464 + 314700465.

It is an arithmetic number, because the mean of its divisors is an integer number (314700465).

Almost surely, 2^629400929 is an apocalyptic number.

It is an amenable number.

629400929 is a deficient number, since it is larger than the sum of its proper divisors (1).

629400929 is an equidigital number, since it uses as much as digits as its factorization.

629400929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 629400929 is about 25087.8641777255. The cubic root of 629400929 is about 856.9900767999.

The spelling of 629400929 in words is "six hundred twenty-nine million, four hundred thousand, nine hundred twenty-nine".