152976409 has 4 divisors (see below), whose sum is σ = 153006516. Its totient is φ = 152946304.

The previous prime is 152976403. The next prime is 152976431. The reversal of 152976409 is 904679251.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 904679251 = 7 ⋅129239893.

It can be written as a sum of positive squares in 2 ways, for example, as 87366409 + 65610000 = 9347^2 + 8100^2 .

It is a cyclic number.

It is not a de Polignac number, because 152976409 - 2⁷ = 152976281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152976403) 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, 5344 + ... + 18289.

It is an arithmetic number, because the mean of its divisors is an integer number (38251629).

Almost surely, 2^152976409 is an apocalyptic number.

It is an amenable number.

152976409 is a deficient number, since it is larger than the sum of its proper divisors (30107).

152976409 is an equidigital number, since it uses as much as digits as its factorization.

152976409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30106.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 152976409 is about 12368.3632304359. The cubic root of 152976409 is about 534.8206333818.

The spelling of 152976409 in words is "one hundred fifty-two million, nine hundred seventy-six thousand, four hundred nine".