16945739 has 8 divisors (see below), whose sum is σ = 18131280. Its totient is φ = 15789600.

The previous prime is 16945729. The next prime is 16945759. The reversal of 16945739 is 93754961.

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 16945739 - 2¹² = 16941643 is a prime.

It is a super-2 number, since 2×16945739² = 574316140512242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16945739.

It is not an unprimeable number, because it can be changed into a prime (16945729) 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, 6152 + ... + 8469.

It is an arithmetic number, because the mean of its divisors is an integer number (2266410).

Almost surely, 2^16945739 is an apocalyptic number.

16945739 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

16945739 is a deficient number, since it is larger than the sum of its proper divisors (1185541).

16945739 is a wasteful number, since it uses less digits than its factorization.

16945739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14701.

The product of its digits is 204120, while the sum is 44.

The square root of 16945739 is about 4116.5202538066. The cubic root of 16945739 is about 256.8542982510.

The spelling of 16945739 in words is "sixteen million, nine hundred forty-five thousand, seven hundred thirty-nine".