940451251 has 2 divisors, whose sum is σ = 940451252. Its totient is φ = 940451250.

The previous prime is 940451231. The next prime is 940451257. The reversal of 940451251 is 152154049.

It is a strong prime.

It is an emirp because it is prime and its reverse (152154049) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 940451251 - 2⁵ = 940451219 is a prime.

It is not a weakly prime, because it can be changed into another prime (940451257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 470225625 + 470225626.

It is an arithmetic number, because the mean of its divisors is an integer number (470225626).

Almost surely, 2^940451251 is an apocalyptic number.

940451251 is a deficient number, since it is larger than the sum of its proper divisors (1).

940451251 is an equidigital number, since it uses as much as digits as its factorization.

940451251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 940451251 is about 30666.7776429151. Note that the first 3 decimals coincide. The cubic root of 940451251 is about 979.7428351325.

The spelling of 940451251 in words is "nine hundred forty million, four hundred fifty-one thousand, two hundred fifty-one".