149702989 has 2 divisors, whose sum is σ = 149702990. Its totient is φ = 149702988.

The previous prime is 149702983. The next prime is 149703007. The reversal of 149702989 is 989207941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119727364 + 29975625 = 10942^2 + 5475^2 .

It is an emirp because it is prime and its reverse (989207941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149702989 - 2²¹ = 147605837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149702983) 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 as a sum of consecutive naturals, namely, 74851494 + 74851495.

It is an arithmetic number, because the mean of its divisors is an integer number (74851495).

Almost surely, 2^149702989 is an apocalyptic number.

It is an amenable number.

149702989 is a deficient number, since it is larger than the sum of its proper divisors (1).

149702989 is an equidigital number, since it uses as much as digits as its factorization.

149702989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 149702989 is about 12235.3172823593. The cubic root of 149702989 is about 530.9783625563.

The spelling of 149702989 in words is "one hundred forty-nine million, seven hundred two thousand, nine hundred eighty-nine".