150639917 has 8 divisors (see below), whose sum is σ = 151531800. Its totient is φ = 149751360.

The previous prime is 150639899. The next prime is 150639967. The reversal of 150639917 is 719936051.

It can be written as a sum of positive squares in 4 ways, for example, as 38576521 + 112063396 = 6211^2 + 10586^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 150639917 - 2¹⁰ = 150638893 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 (150639967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227567 + ... + 228227.

It is an arithmetic number, because the mean of its divisors is an integer number (18941475).

Almost surely, 2^150639917 is an apocalyptic number.

It is an amenable number.

150639917 is a deficient number, since it is larger than the sum of its proper divisors (891883).

150639917 is an equidigital number, since it uses as much as digits as its factorization.

150639917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1663.

The product of its (nonzero) digits is 51030, while the sum is 41.

The square root of 150639917 is about 12273.5454127974. The cubic root of 150639917 is about 532.0837829962.

The spelling of 150639917 in words is "one hundred fifty million, six hundred thirty-nine thousand, nine hundred seventeen".