247377293 has 2 divisors, whose sum is σ = 247377294. Its totient is φ = 247377292.

The previous prime is 247377289. The next prime is 247377329. The reversal of 247377293 is 392773742.

Together with next prime (247377329) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240808324 + 6568969 = 15518^2 + 2563^2 .

It is a cyclic number.

It is not a de Polignac number, because 247377293 - 2² = 247377289 is a prime.

It is a super-2 number, since 2×247377293² = 122391050184015698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247377233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123688646 + 123688647.

It is an arithmetic number, because the mean of its divisors is an integer number (123688647).

Almost surely, 2^247377293 is an apocalyptic number.

It is an amenable number.

247377293 is a deficient number, since it is larger than the sum of its proper divisors (1).

247377293 is an equidigital number, since it uses as much as digits as its factorization.

247377293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 444528, while the sum is 44.

The square root of 247377293 is about 15728.2323545909. The cubic root of 247377293 is about 627.7498403546.

The spelling of 247377293 in words is "two hundred forty-seven million, three hundred seventy-seven thousand, two hundred ninety-three".