70238947 has 2 divisors, whose sum is σ = 70238948. Its totient is φ = 70238946.

The previous prime is 70238929. The next prime is 70238977. The reversal of 70238947 is 74983207.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70238947 is a prime.

It is not a weakly prime, because it can be changed into another prime (70238977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35119473 + 35119474.

It is an arithmetic number, because the mean of its divisors is an integer number (35119474).

Almost surely, 2^70238947 is an apocalyptic number.

70238947 is a deficient number, since it is larger than the sum of its proper divisors (1).

70238947 is an equidigital number, since it uses as much as digits as its factorization.

70238947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 70238947 is about 8380.8679144824. The cubic root of 70238947 is about 412.5969349173.

The spelling of 70238947 in words is "seventy million, two hundred thirty-eight thousand, nine hundred forty-seven".