139861070 has 8 divisors (see below), whose sum is σ = 251749944. Its totient is φ = 55944424.

The previous prime is 139861067. The next prime is 139861103. The reversal of 139861070 is 70168931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×139861070² = 39122237803089800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 139861070.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6993044 + ... + 6993063.

It is an arithmetic number, because the mean of its divisors is an integer number (31468743).

Almost surely, 2^139861070 is an apocalyptic number.

139861070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139861070 is a deficient number, since it is larger than the sum of its proper divisors (111888874).

139861070 is a wasteful number, since it uses less digits than its factorization.

139861070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13986114.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 139861070 is about 11826.2872449472. The cubic root of 139861070 is about 519.0775930509.

The spelling of 139861070 in words is "one hundred thirty-nine million, eight hundred sixty-one thousand, seventy".