70189949 has 2 divisors, whose sum is σ = 70189950. Its totient is φ = 70189948.

The previous prime is 70189913. The next prime is 70190027. The reversal of 70189949 is 94998107.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68773849 + 1416100 = 8293^2 + 1190^2 .

It is a cyclic number.

It is not a de Polignac number, because 70189949 - 2¹² = 70185853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70180949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35094974 + 35094975.

It is an arithmetic number, because the mean of its divisors is an integer number (35094975).

Almost surely, 2^70189949 is an apocalyptic number.

It is an amenable number.

70189949 is a deficient number, since it is larger than the sum of its proper divisors (1).

70189949 is an equidigital number, since it uses as much as digits as its factorization.

70189949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 70189949 is about 8377.9441989070. The cubic root of 70189949 is about 412.5009714088.

The spelling of 70189949 in words is "seventy million, one hundred eighty-nine thousand, nine hundred forty-nine".