137209946 has 8 divisors (see below), whose sum is σ = 206952564. Its totient is φ = 68225760.

The previous prime is 137209931. The next prime is 137209957. The reversal of 137209946 is 649902731.

It can be written as a sum of positive squares in 2 ways, for example, as 136773025 + 436921 = 11695^2 + 661^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189155 + ... + 189878.

Almost surely, 2^137209946 is an apocalyptic number.

137209946 is a deficient number, since it is larger than the sum of its proper divisors (69742618).

137209946 is a wasteful number, since it uses less digits than its factorization.

137209946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379216.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 137209946 is about 11713.6649260596. The cubic root of 137209946 is about 515.7768725620.

The spelling of 137209946 in words is "one hundred thirty-seven million, two hundred nine thousand, nine hundred forty-six".