146989949 has 4 divisors (see below), whose sum is σ = 147192864. Its totient is φ = 146787036.

The previous prime is 146989943. The next prime is 146989963. The reversal of 146989949 is 949989641.

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: 949989641 = 2857 ⋅332513.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146989949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146989943) 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, 100367 + ... + 101820.

It is an arithmetic number, because the mean of its divisors is an integer number (36798216).

Almost surely, 2^146989949 is an apocalyptic number.

It is an amenable number.

146989949 is a deficient number, since it is larger than the sum of its proper divisors (202915).

146989949 is an equidigital number, since it uses as much as digits as its factorization.

146989949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202914.

The product of its digits is 5038848, while the sum is 59.

The square root of 146989949 is about 12123.9411496427. The cubic root of 146989949 is about 527.7511800627.

The spelling of 146989949 in words is "one hundred forty-six million, nine hundred eighty-nine thousand, nine hundred forty-nine".