145399000 has 32 divisors (see below), whose sum is σ = 340236000. Its totient is φ = 58159200.

The previous prime is 145398973. The next prime is 145399003. The reversal of 145399000 is 993541.

It is a super-2 number, since 2×145399000² = 42281738402000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145399003) 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 7 ways as a sum of consecutive naturals, for example, 71700 + ... + 73699.

It is an arithmetic number, because the mean of its divisors is an integer number (10632375).

Almost surely, 2^145399000 is an apocalyptic number.

145399000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145399000 is an abundant number, since it is smaller than the sum of its proper divisors (194837000).

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

145399000 is a wasteful number, since it uses less digits than its factorization.

145399000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145420 (or 145406 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 145399000 is about 12058.1507703296. The cubic root of 145399000 is about 525.8402267414.

The spelling of 145399000 in words is "one hundred forty-five million, three hundred ninety-nine thousand".