139779070 has 16 divisors (see below), whose sum is σ = 251936208. Its totient is φ = 55837440.

The previous prime is 139779061. The next prime is 139779071. The reversal of 139779070 is 70977931.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139779071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1011 + ... + 16750.

It is an arithmetic number, because the mean of its divisors is an integer number (15746013).

Almost surely, 2^139779070 is an apocalyptic number.

139779070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139779070 is a deficient number, since it is larger than the sum of its proper divisors (112157138).

139779070 is a wasteful number, since it uses less digits than its factorization.

139779070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18555.

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

The square root of 139779070 is about 11822.8198835980. The cubic root of 139779070 is about 518.9761288293.

The spelling of 139779070 in words is "one hundred thirty-nine million, seven hundred seventy-nine thousand, seventy".