3950143509 has 8 divisors (see below), whose sum is σ = 5672000992. Its totient is φ = 2430857520.

The previous prime is 3950143499. The next prime is 3950143531. The reversal of 3950143509 is 9053410593.

3950143509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3950143509 - 2²⁴ = 3933366293 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 101285731 = 3950143509 / (3 + 9 + 5 + 0 + 1 + 4 + 3 + 5 + 0 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3950143559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50642827 + ... + 50642904.

It is an arithmetic number, because the mean of its divisors is an integer number (709000124).

Almost surely, 2^3950143509 is an apocalyptic number.

3950143509 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

3950143509 is a deficient number, since it is larger than the sum of its proper divisors (1721857483).

3950143509 is a wasteful number, since it uses less digits than its factorization.

3950143509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101285747.

The product of its (nonzero) digits is 72900, while the sum is 39.

The square root of 3950143509 is about 62850.1671358160. The cubic root of 3950143509 is about 1580.7782723753.

The spelling of 3950143509 in words is "three billion, nine hundred fifty million, one hundred forty-three thousand, five hundred nine".