400650629 has 2 divisors, whose sum is σ = 400650630. Its totient is φ = 400650628.

The previous prime is 400650619. The next prime is 400650637. The reversal of 400650629 is 926056004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 335073025 + 65577604 = 18305^2 + 8098^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400650629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400650595 and 400650604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400650619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200325314 + 200325315.

It is an arithmetic number, because the mean of its divisors is an integer number (200325315).

Almost surely, 2^400650629 is an apocalyptic number.

It is an amenable number.

400650629 is a deficient number, since it is larger than the sum of its proper divisors (1).

400650629 is an equidigital number, since it uses as much as digits as its factorization.

400650629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 400650629 is about 20016.2591160286. The cubic root of 400650629 is about 737.2055729456.

The spelling of 400650629 in words is "four hundred million, six hundred fifty thousand, six hundred twenty-nine".