149690429 has 4 divisors (see below), whose sum is σ = 171074784. Its totient is φ = 128306076.

The previous prime is 149690407. The next prime is 149690473. The reversal of 149690429 is 924096941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 149690429 - 2¹² = 149686333 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 149690429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149690029) 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, 10692167 + ... + 10692180.

It is an arithmetic number, because the mean of its divisors is an integer number (42768696).

Almost surely, 2^149690429 is an apocalyptic number.

It is an amenable number.

149690429 is a deficient number, since it is larger than the sum of its proper divisors (21384355).

149690429 is an equidigital number, since it uses as much as digits as its factorization.

149690429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21384354.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 149690429 is about 12234.8040033341. The cubic root of 149690429 is about 530.9635125416.

The spelling of 149690429 in words is "one hundred forty-nine million, six hundred ninety thousand, four hundred twenty-nine".