137440437 has 4 divisors (see below), whose sum is σ = 183253920. Its totient is φ = 91626956.

The previous prime is 137440423. The next prime is 137440477. The reversal of 137440437 is 734044731.

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 137440437 - 2¹⁶ = 137374901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 137440398 and 137440407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137440417) 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, 22906737 + ... + 22906742.

It is an arithmetic number, because the mean of its divisors is an integer number (45813480).

Almost surely, 2^137440437 is an apocalyptic number.

It is an amenable number.

137440437 is a deficient number, since it is larger than the sum of its proper divisors (45813483).

137440437 is an equidigital number, since it uses as much as digits as its factorization.

137440437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45813482.

The product of its (nonzero) digits is 28224, while the sum is 33.

The square root of 137440437 is about 11723.4993495969. The cubic root of 137440437 is about 516.0655188423.

The spelling of 137440437 in words is "one hundred thirty-seven million, four hundred forty thousand, four hundred thirty-seven".