139965662 has 4 divisors (see below), whose sum is σ = 209948496. Its totient is φ = 69982830.

The previous prime is 139965587. The next prime is 139965673. The reversal of 139965662 is 266569931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 266569931 = 23 ⋅11589997.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34991414 + ... + 34991417.

It is an arithmetic number, because the mean of its divisors is an integer number (52487124).

Almost surely, 2^139965662 is an apocalyptic number.

139965662 is a deficient number, since it is larger than the sum of its proper divisors (69982834).

139965662 is an equidigital number, since it uses as much as digits as its factorization.

139965662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69982833.

The product of its digits is 524880, while the sum is 47.

The square root of 139965662 is about 11830.7084318734. The cubic root of 139965662 is about 519.2069543656.

The spelling of 139965662 in words is "one hundred thirty-nine million, nine hundred sixty-five thousand, six hundred sixty-two".