149709407929 has 9 divisors (see below), whose sum is σ = 152227893519. Its totient is φ = 147231939960.

The previous prime is 149709407927. The next prime is 149709407941. The reversal of 149709407929 is 929704907941.

The square root of 149709407929 is 386923.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4868271529 + 144841136400 = 69773^2 + 380580^2 .

It is not a de Polignac number, because 149709407929 - 2¹ = 149709407927 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149709407927) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 23599132 + ... + 23605474.

It is an arithmetic number, because the mean of its divisors is an integer number (16914210391).

Almost surely, 2^149709407929 is an apocalyptic number.

149709407929 is the 386923-rd square number.

149709407929 is the 193462-nd centered octagonal number.

It is an amenable number.

149709407929 is a deficient number, since it is larger than the sum of its proper divisors (2518485590).

149709407929 is an frugal number, since it uses more digits than its factorization.

149709407929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12808 (or 6404 counting only the distinct ones).

The product of its (nonzero) digits is 10287648, while the sum is 61.

The spelling of 149709407929 in words is "one hundred forty-nine billion, seven hundred nine million, four hundred seven thousand, nine hundred twenty-nine".