139970 has 8 divisors (see below), whose sum is σ = 251964. Its totient is φ = 55984.

The previous prime is 139969. The next prime is 139981. The reversal of 139970 is 79931.

139970 = 215² + 216² + 217².

It can be written as a sum of positive squares in 2 ways, for example, as 139129 + 841 = 373^2 + 29^2 .

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

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139970.

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, 6989 + ... + 7008.

2¹³⁹⁹⁷⁰ is an apocalyptic number.

139970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139970 is a deficient number, since it is larger than the sum of its proper divisors (111994).

139970 is a wasteful number, since it uses less digits than its factorization.

139970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14004.

The product of its (nonzero) digits is 1701, while the sum is 29.

The square root of 139970 is about 374.1256473432. The cubic root of 139970 is about 51.9212318292.

The spelling of 139970 in words is "one hundred thirty-nine thousand, nine hundred seventy".