139681962 has 64 divisors (see below), whose sum is σ = 375632640. Its totient is φ = 37559808.

The previous prime is 139681937. The next prime is 139681999. The reversal of 139681962 is 269186931.

It is a happy number.

It is a super-2 number, since 2×139681962² = 39022101016338888, which contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 4443 + ... + 17294.

It is an arithmetic number, because the mean of its divisors is an integer number (5869260).

Almost surely, 2^139681962 is an apocalyptic number.

139681962 is an abundant number, since it is smaller than the sum of its proper divisors (235950678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139681962 is a wasteful number, since it uses less digits than its factorization.

139681962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21772 (or 21766 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 139681962 is about 11818.7123664128. The cubic root of 139681962 is about 518.8559191083.

The spelling of 139681962 in words is "one hundred thirty-nine million, six hundred eighty-one thousand, nine hundred sixty-two".