149940487 has 2 divisors, whose sum is σ = 149940488. Its totient is φ = 149940486.

The previous prime is 149940451. The next prime is 149940523. The reversal of 149940487 is 784049941.

It is a balanced prime because it is at equal distance from previous prime (149940451) and next prime (149940523).

It is an emirp because it is prime and its reverse (784049941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149940487 - 2¹⁹ = 149416199 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149940437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74970243 + 74970244.

It is an arithmetic number, because the mean of its divisors is an integer number (74970244).

Almost surely, 2^149940487 is an apocalyptic number.

149940487 is a deficient number, since it is larger than the sum of its proper divisors (1).

149940487 is an equidigital number, since it uses as much as digits as its factorization.

149940487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 149940487 is about 12245.0188648283. The cubic root of 149940487 is about 531.2590064079.

The spelling of 149940487 in words is "one hundred forty-nine million, nine hundred forty thousand, four hundred eighty-seven".