149259478 has 16 divisors (see below), whose sum is σ = 236985840. Its totient is φ = 70308000.

The previous prime is 149259457. The next prime is 149259499. The reversal of 149259478 is 874952941.

It is an interprime number because it is at equal distance from previous prime (149259457) and next prime (149259499).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3973 + ... + 17728.

It is an arithmetic number, because the mean of its divisors is an integer number (14811615).

Almost surely, 2^149259478 is an apocalyptic number.

149259478 is a deficient number, since it is larger than the sum of its proper divisors (87726362).

149259478 is a wasteful number, since it uses less digits than its factorization.

149259478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21903.

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

The square root of 149259478 is about 12217.1796254291. The cubic root of 149259478 is about 530.4534839527.

The spelling of 149259478 in words is "one hundred forty-nine million, two hundred fifty-nine thousand, four hundred seventy-eight".