16139677 has 8 divisors (see below), whose sum is σ = 16379064. Its totient is φ = 15902208.

The previous prime is 16139671. The next prime is 16139713. The reversal of 16139677 is 77693161.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3136441 + 13003236 = 1771^2 + 3606^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 16139677 - 2¹¹ = 16137629 is a prime.

It is a super-3 number, since 3×16139677³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16139671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26023 + ... + 26635.

It is an arithmetic number, because the mean of its divisors is an integer number (2047383).

Almost surely, 2^16139677 is an apocalyptic number.

It is an amenable number.

16139677 is a deficient number, since it is larger than the sum of its proper divisors (239387).

16139677 is a wasteful number, since it uses less digits than its factorization.

16139677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959.

The product of its digits is 47628, while the sum is 40.

The square root of 16139677 is about 4017.4216856088. The cubic root of 16139677 is about 252.7153448337.

The spelling of 16139677 in words is "sixteen million, one hundred thirty-nine thousand, six hundred seventy-seven".