149771390 has 8 divisors (see below), whose sum is σ = 269588520. Its totient is φ = 59908552.

The previous prime is 149771359. The next prime is 149771393. The reversal of 149771390 is 93177941.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149771393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7488560 + ... + 7488579.

It is an arithmetic number, because the mean of its divisors is an integer number (33698565).

Almost surely, 2^149771390 is an apocalyptic number.

149771390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

149771390 is a deficient number, since it is larger than the sum of its proper divisors (119817130).

149771390 is a wasteful number, since it uses less digits than its factorization.

149771390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14977146.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 149771390 is about 12238.1121910203. The cubic root of 149771390 is about 531.0592202622.

The spelling of 149771390 in words is "one hundred forty-nine million, seven hundred seventy-one thousand, three hundred ninety".