145479987 has 12 divisors (see below), whose sum is σ = 211066440. Its totient is φ = 96558048.

The previous prime is 145479977. The next prime is 145480007. The reversal of 145479987 is 789974541.

145479987 is a `hidden beast` number, since 1 + 4 + 547 + 9 + 98 + 7 = 666.

It is not a de Polignac number, because 145479987 - 2⁸ = 145479731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145479947) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33562 + ... + 37647.

It is an arithmetic number, because the mean of its divisors is an integer number (17588870).

Almost surely, 2^145479987 is an apocalyptic number.

145479987 is a deficient number, since it is larger than the sum of its proper divisors (65586453).

145479987 is a wasteful number, since it uses less digits than its factorization.

145479987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71442 (or 71439 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 145479987 is about 12061.5084877473. The cubic root of 145479987 is about 525.9378393294.

The spelling of 145479987 in words is "one hundred forty-five million, four hundred seventy-nine thousand, nine hundred eighty-seven".