70977139 has 2 divisors, whose sum is σ = 70977140. Its totient is φ = 70977138.

The previous prime is 70977121. The next prime is 70977157. The reversal of 70977139 is 93177907.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (70977121) and next prime (70977157).

It is a cyclic number.

It is not a de Polignac number, because 70977139 - 2⁵ = 70977107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70977095 and 70977104.

It is not a weakly prime, because it can be changed into another prime (70977119) 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 as a sum of consecutive naturals, namely, 35488569 + 35488570.

It is an arithmetic number, because the mean of its divisors is an integer number (35488570).

Almost surely, 2^70977139 is an apocalyptic number.

70977139 is a deficient number, since it is larger than the sum of its proper divisors (1).

70977139 is an equidigital number, since it uses as much as digits as its factorization.

70977139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 83349, while the sum is 43.

The square root of 70977139 is about 8424.7931131868. The cubic root of 70977139 is about 414.0373273383.

The spelling of 70977139 in words is "seventy million, nine hundred seventy-seven thousand, one hundred thirty-nine".