137397249 has 32 divisors (see below), whose sum is σ = 223027200. Its totient is φ = 82907280.

The previous prime is 137397241. The next prime is 137397251. The reversal of 137397249 is 942793731.

137397249 is a `hidden beast` number, since 13 + 7 + 397 + 249 = 666.

It is not a de Polignac number, because 137397249 - 2³ = 137397241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137397241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77232 + ... + 78990.

It is an arithmetic number, because the mean of its divisors is an integer number (6969600).

Almost surely, 2^137397249 is an apocalyptic number.

It is an amenable number.

137397249 is a deficient number, since it is larger than the sum of its proper divisors (85629951).

137397249 is a wasteful number, since it uses less digits than its factorization.

137397249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042 (or 2036 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 137397249 is about 11721.6572633736. The cubic root of 137397249 is about 516.0114586422.

It can be divided in two parts, 137 and 397249, that added together give a triangular number (397386 = T₈₉₁).

The spelling of 137397249 in words is "one hundred thirty-seven million, three hundred ninety-seven thousand, two hundred forty-nine".