154413987 has 32 divisors (see below), whose sum is σ = 260262912. Its totient is φ = 79242624.

The previous prime is 154413977. The next prime is 154413991. The reversal of 154413987 is 789314451.

It is a happy number.

It is not a de Polignac number, because 154413987 - 2⁷ = 154413859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (154413967) 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 31 ways as a sum of consecutive naturals, for example, 2458 + ... + 17744.

It is an arithmetic number, because the mean of its divisors is an integer number (8133216).

Almost surely, 2^154413987 is an apocalyptic number.

154413987 is a deficient number, since it is larger than the sum of its proper divisors (105848925).

154413987 is a wasteful number, since it uses less digits than its factorization.

154413987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15347.

The product of its digits is 120960, while the sum is 42.

The square root of 154413987 is about 12426.3424626879. The cubic root of 154413987 is about 536.4907176678.

The spelling of 154413987 in words is "one hundred fifty-four million, four hundred thirteen thousand, nine hundred eighty-seven".