149859400 has 24 divisors (see below), whose sum is σ = 348423570. Its totient is φ = 59943680.

The previous prime is 149859389. The next prime is 149859401. The reversal of 149859400 is 4958941.

It can be written as a sum of positive squares in 3 ways, for example, as 73925604 + 75933796 = 8598^2 + 8714^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (149859401) 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 5 ways as a sum of consecutive naturals, for example, 374449 + ... + 374848.

Almost surely, 2^149859400 is an apocalyptic number.

149859400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149859400 is an abundant number, since it is smaller than the sum of its proper divisors (198564170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149859400 is a wasteful number, since it uses less digits than its factorization.

149859400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749313 (or 749304 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 149859400 is about 12241.7073972547. The cubic root of 149859400 is about 531.1632218120.

The spelling of 149859400 in words is "one hundred forty-nine million, eight hundred fifty-nine thousand, four hundred".