151439 has 4 divisors (see below), whose sum is σ = 152400. Its totient is φ = 150480.

The previous prime is 151433. The next prime is 151451. The reversal of 151439 is 934151.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 151439 - 2⁴ = 151423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 151439.

It is not an unprimeable number, because it can be changed into a prime (151433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182 + ... + 579.

It is an arithmetic number, because the mean of its divisors is an integer number (38100).

2¹⁵¹⁴³⁹ is an apocalyptic number.

151439 is a deficient number, since it is larger than the sum of its proper divisors (961).

151439 is an equidigital number, since it uses as much as digits as its factorization.

151439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960.

The product of its digits is 540, while the sum is 23.

The square root of 151439 is about 389.1516413945. The cubic root of 151439 is about 53.3022953086.

The spelling of 151439 in words is "one hundred fifty-one thousand, four hundred thirty-nine".