307440149 has 4 divisors (see below), whose sum is σ = 320807136. Its totient is φ = 294073164.

The previous prime is 307440127. The next prime is 307440151. The reversal of 307440149 is 941044703.

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 307440149 - 2¹² = 307436053 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 (307440109) 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, 6683459 + ... + 6683504.

It is an arithmetic number, because the mean of its divisors is an integer number (80201784).

Almost surely, 2^307440149 is an apocalyptic number.

It is an amenable number.

307440149 is a deficient number, since it is larger than the sum of its proper divisors (13366987).

307440149 is a wasteful number, since it uses less digits than its factorization.

307440149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13366986.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 307440149 is about 17533.9712843383. The cubic root of 307440149 is about 674.9219106737.

The spelling of 307440149 in words is "three hundred seven million, four hundred forty thousand, one hundred forty-nine".