149899990 has 8 divisors (see below), whose sum is σ = 269820000. Its totient is φ = 59959992.

The previous prime is 149899979. The next prime is 149900011. The reversal of 149899990 is 99998941.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7494990 + ... + 7495009.

It is an arithmetic number, because the mean of its divisors is an integer number (33727500).

Almost surely, 2^149899990 is an apocalyptic number.

149899990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

149899990 is a deficient number, since it is larger than the sum of its proper divisors (119920010).

149899990 is a wasteful number, since it uses less digits than its factorization.

149899990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14990006.

The product of its (nonzero) digits is 1889568, while the sum is 58.

The square root of 149899990 is about 12243.3651419861. The cubic root of 149899990 is about 531.2111733562.

The spelling of 149899990 in words is "one hundred forty-nine million, eight hundred ninety-nine thousand, nine hundred ninety".