139546970 has 8 divisors (see below), whose sum is σ = 251184564. Its totient is φ = 55818784.

The previous prime is 139546951. The next prime is 139546991. The reversal of 139546970 is 79645931.

It is a Cunningham number, because it is equal to 11813²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 139546969 + 1 = 11813^2 + 1^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6977339 + ... + 6977358.

Almost surely, 2^139546970 is an apocalyptic number.

139546970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139546970 is a deficient number, since it is larger than the sum of its proper divisors (111637594).

139546970 is a wasteful number, since it uses less digits than its factorization.

139546970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13954704.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 139546970 is about 11813.0000423263. Note that the first 4 decimals coincide. The cubic root of 139546970 is about 518.6887202980.

The spelling of 139546970 in words is "one hundred thirty-nine million, five hundred forty-six thousand, nine hundred seventy".