152478949 has 4 divisors (see below), whose sum is σ = 174261664. Its totient is φ = 130696236.

The previous prime is 152478883. The next prime is 152478973. The reversal of 152478949 is 949874251.

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, and also an emirpimes, since its reverse is a distinct semiprime: 949874251 = 7019 ⋅135329.

It is a cyclic number.

It is not a de Polignac number, because 152478949 - 2⁹ = 152478437 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 (152478149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10891347 + ... + 10891360.

It is an arithmetic number, because the mean of its divisors is an integer number (43565416).

Almost surely, 2^152478949 is an apocalyptic number.

It is an amenable number.

152478949 is a deficient number, since it is larger than the sum of its proper divisors (21782715).

152478949 is an equidigital number, since it uses as much as digits as its factorization.

152478949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21782714.

The product of its digits is 725760, while the sum is 49.

The square root of 152478949 is about 12348.2366757363. The cubic root of 152478949 is about 534.2402807527.

The spelling of 152478949 in words is "one hundred fifty-two million, four hundred seventy-eight thousand, nine hundred forty-nine".