137369749 has 4 divisors (see below), whose sum is σ = 149857920. Its totient is φ = 124881580.

The previous prime is 137369737. The next prime is 137369801. The reversal of 137369749 is 947963731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 137369749 - 2¹⁵ = 137336981 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 (137369249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6244069 + ... + 6244090.

It is an arithmetic number, because the mean of its divisors is an integer number (37464480).

Almost surely, 2^137369749 is an apocalyptic number.

It is an amenable number.

137369749 is a deficient number, since it is larger than the sum of its proper divisors (12488171).

137369749 is a wasteful number, since it uses less digits than its factorization.

137369749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12488170.

The product of its digits is 857304, while the sum is 49.

The square root of 137369749 is about 11720.4841623544. The cubic root of 137369749 is about 515.9770298550.

The spelling of 137369749 in words is "one hundred thirty-seven million, three hundred sixty-nine thousand, seven hundred forty-nine".