149489794669 has 4 divisors (see below), whose sum is σ = 149716638720. Its totient is φ = 149262950620.

The previous prime is 149489794637. The next prime is 149489794723. The reversal of 149489794669 is 966497984941.

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, and also an emirpimes, since its reverse is a distinct semiprime: 966497984941 = 44963 ⋅21495407.

It is a cyclic number.

It is not a de Polignac number, because 149489794669 - 2⁵ = 149489794637 is a prime.

It is a super-2 number, since 2×149489794669² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149489794595 and 149489794604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149489794369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113421037 + ... + 113422354.

It is an arithmetic number, because the mean of its divisors is an integer number (37429159680).

Almost surely, 2^149489794669 is an apocalyptic number.

It is an amenable number.

149489794669 is a deficient number, since it is larger than the sum of its proper divisors (226844051).

149489794669 is an equidigital number, since it uses as much as digits as its factorization.

149489794669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226844050.

The product of its digits is 846526464, while the sum is 76.

The spelling of 149489794669 in words is "one hundred forty-nine billion, four hundred eighty-nine million, seven hundred ninety-four thousand, six hundred sixty-nine".