70390069 has 2 divisors, whose sum is σ = 70390070. Its totient is φ = 70390068.

The previous prime is 70390049. The next prime is 70390091. The reversal of 70390069 is 96009307.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44756100 + 25633969 = 6690^2 + 5063^2 .

It is a cyclic number.

It is not a de Polignac number, because 70390069 - 2⁷ = 70389941 is a prime.

It is a super-2 number, since 2×70390069² = 9909523627649522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70390049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35195034 + 35195035.

It is an arithmetic number, because the mean of its divisors is an integer number (35195035).

Almost surely, 2^70390069 is an apocalyptic number.

It is an amenable number.

70390069 is a deficient number, since it is larger than the sum of its proper divisors (1).

70390069 is an equidigital number, since it uses as much as digits as its factorization.

70390069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 70390069 is about 8389.8789621782. The cubic root of 70390069 is about 412.8926294100.

The spelling of 70390069 in words is "seventy million, three hundred ninety thousand, sixty-nine".