149989699 has 2 divisors, whose sum is σ = 149989700. Its totient is φ = 149989698.

The previous prime is 149989673. The next prime is 149989727. The reversal of 149989699 is 996989941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149989699 - 2⁷ = 149989571 is a prime.

It is a super-2 number, since 2×149989699² = 44993819612221202, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 149989699.

It is not a weakly prime, because it can be changed into another prime (149989199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74994849 + 74994850.

It is an arithmetic number, because the mean of its divisors is an integer number (74994850).

Almost surely, 2^149989699 is an apocalyptic number.

149989699 is a deficient number, since it is larger than the sum of its proper divisors (1).

149989699 is an equidigital number, since it uses as much as digits as its factorization.

149989699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11337408, while the sum is 64.

The square root of 149989699 is about 12247.0281701317. The cubic root of 149989699 is about 531.3171215952.

The spelling of 149989699 in words is "one hundred forty-nine million, nine hundred eighty-nine thousand, six hundred ninety-nine".