940209239 has 2 divisors, whose sum is σ = 940209240. Its totient is φ = 940209238.

The previous prime is 940209229. The next prime is 940209247. The reversal of 940209239 is 932902049.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 940209239 - 2⁴ = 940209223 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (940209229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 470104619 + 470104620.

It is an arithmetic number, because the mean of its divisors is an integer number (470104620).

Almost surely, 2^940209239 is an apocalyptic number.

940209239 is a deficient number, since it is larger than the sum of its proper divisors (1).

940209239 is an equidigital number, since it uses as much as digits as its factorization.

940209239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 940209239 is about 30662.8315554842. The cubic root of 940209239 is about 979.6587868756.

The spelling of 940209239 in words is "nine hundred forty million, two hundred nine thousand, two hundred thirty-nine".