123649337 has 16 divisors (see below), whose sum is σ = 143400192. Its totient is φ = 104431680.

The previous prime is 123649327. The next prime is 123649349. The reversal of 123649337 is 733946321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123649337 is a prime.

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 123649337.

It is not an unprimeable number, because it can be changed into a prime (123649327) 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, 228287 + ... + 228827.

It is an arithmetic number, because the mean of its divisors is an integer number (8962512).

Almost surely, 2^123649337 is an apocalyptic number.

It is an amenable number.

123649337 is a deficient number, since it is larger than the sum of its proper divisors (19750855).

123649337 is a wasteful number, since it uses less digits than its factorization.

123649337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968.

The product of its digits is 81648, while the sum is 38.

The square root of 123649337 is about 11119.7723447920. The cubic root of 123649337 is about 498.1925904136.

The spelling of 123649337 in words is "one hundred twenty-three million, six hundred forty-nine thousand, three hundred thirty-seven".