138679962 has 32 divisors (see below), whose sum is σ = 283910400. Its totient is φ = 45145920.

The previous prime is 138679907. The next prime is 138679967. The reversal of 138679962 is 269976831.

It is a super-3 number, since 3×138679962³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (138679967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53263 + ... + 55805.

It is an arithmetic number, because the mean of its divisors is an integer number (8872200).

Almost surely, 2^138679962 is an apocalyptic number.

138679962 is an abundant number, since it is smaller than the sum of its proper divisors (145230438).

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

138679962 is a wasteful number, since it uses less digits than its factorization.

138679962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758.

The product of its digits is 979776, while the sum is 51.

The square root of 138679962 is about 11776.2456665951. The cubic root of 138679962 is about 517.6122802417.

The spelling of 138679962 in words is "one hundred thirty-eight million, six hundred seventy-nine thousand, nine hundred sixty-two".