209044974007 has 16 divisors (see below), whose sum is σ = 223813611520. Its totient is φ = 194657580000.

The previous prime is 209044973981. The next prime is 209044974053. The reversal of 209044974007 is 700479440902.

It is a cyclic number.

It is not a de Polignac number, because 209044974007 - 2²⁷ = 208910756279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209044974067) 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, 1585882 + ... + 1712632.

It is an arithmetic number, because the mean of its divisors is an integer number (13988350720).

Almost surely, 2^209044974007 is an apocalyptic number.

209044974007 is a deficient number, since it is larger than the sum of its proper divisors (14768637513).

209044974007 is a wasteful number, since it uses less digits than its factorization.

209044974007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128254.

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 209044974007 in words is "two hundred nine billion, forty-four million, nine hundred seventy-four thousand, seven".