149690459 has 4 divisors (see below), whose sum is σ = 149772504. Its totient is φ = 149608416.

The previous prime is 149690407. The next prime is 149690473. The reversal of 149690459 is 954096941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149690459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149693459) 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 in 3 ways as a sum of consecutive naturals, for example, 38222 + ... + 41955.

It is an arithmetic number, because the mean of its divisors is an integer number (37443126).

Almost surely, 2^149690459 is an apocalyptic number.

149690459 is a deficient number, since it is larger than the sum of its proper divisors (82045).

149690459 is an equidigital number, since it uses as much as digits as its factorization.

149690459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82044.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 149690459 is about 12234.8052293447. The cubic root of 149690459 is about 530.9635480124.

The spelling of 149690459 in words is "one hundred forty-nine million, six hundred ninety thousand, four hundred fifty-nine".