145399850 has 12 divisors (see below), whose sum is σ = 270443814. Its totient is φ = 58159920.

The previous prime is 145399801. The next prime is 145399853. The reversal of 145399850 is 58993541.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 86248369 + 59151481 = 9287^2 + 7691^2 .

It is a super-2 number, since 2×145399850² = 42282232760045000, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145399853) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1453949 + ... + 1454048.

Almost surely, 2^145399850 is an apocalyptic number.

145399850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145399850 is a deficient number, since it is larger than the sum of its proper divisors (125043964).

145399850 is a wasteful number, since it uses less digits than its factorization.

145399850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2908009 (or 2908004 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 145399850 is about 12058.1860161469. The cubic root of 145399850 is about 525.8412514236.

It can be divided in two parts, 14539 and 9850, that added together give a cube (24389 = 29³).

The spelling of 145399850 in words is "one hundred forty-five million, three hundred ninety-nine thousand, eight hundred fifty".