70270139 has 4 divisors (see below), whose sum is σ = 70496400. Its totient is φ = 70043880.

The previous prime is 70270133. The next prime is 70270147. The reversal of 70270139 is 93107207.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93107207 = 37 ⋅2516411.

It is a cyclic number.

It is not a de Polignac number, because 70270139 - 2⁸ = 70269883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70270133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112664 + ... + 113285.

It is an arithmetic number, because the mean of its divisors is an integer number (17624100).

Almost surely, 2^70270139 is an apocalyptic number.

70270139 is a deficient number, since it is larger than the sum of its proper divisors (226261).

70270139 is a wasteful number, since it uses less digits than its factorization.

70270139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226260.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 70270139 is about 8382.7286130472. The cubic root of 70270139 is about 412.6580017923.

The spelling of 70270139 in words is "seventy million, two hundred seventy thousand, one hundred thirty-nine".