70909453 has 2 divisors, whose sum is σ = 70909454. Its totient is φ = 70909452.

The previous prime is 70909439. The next prime is 70909469. The reversal of 70909453 is 35490907.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67272804 + 3636649 = 8202^2 + 1907^2 .

It is an emirp because it is prime and its reverse (35490907) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70909453 - 2²¹ = 68812301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70909403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35454726 + 35454727.

It is an arithmetic number, because the mean of its divisors is an integer number (35454727).

Almost surely, 2^70909453 is an apocalyptic number.

It is an amenable number.

70909453 is a deficient number, since it is larger than the sum of its proper divisors (1).

70909453 is an equidigital number, since it uses as much as digits as its factorization.

70909453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 70909453 is about 8420.7750830906. The cubic root of 70909453 is about 413.9056725360.

The spelling of 70909453 in words is "seventy million, nine hundred nine thousand, four hundred fifty-three".