940209629 has 2 divisors, whose sum is σ = 940209630. Its totient is φ = 940209628.

The previous prime is 940209587. The next prime is 940209631. The reversal of 940209629 is 926902049.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 496264729 + 443944900 = 22277^2 + 21070^2 .

It is a cyclic number.

It is not a de Polignac number, because 940209629 - 2²⁰ = 939161053 is a prime.

Together with 940209631, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (940209659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 470104814 + 470104815.

It is an arithmetic number, because the mean of its divisors is an integer number (470104815).

Almost surely, 2^940209629 is an apocalyptic number.

It is an amenable number.

940209629 is a deficient number, since it is larger than the sum of its proper divisors (1).

940209629 is an equidigital number, since it uses as much as digits as its factorization.

940209629 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 940209629 is about 30662.8379149745. The cubic root of 940209629 is about 979.6589223302.

The spelling of 940209629 in words is "nine hundred forty million, two hundred nine thousand, six hundred twenty-nine".