39950090437 has 4 divisors (see below), whose sum is σ = 40037509036. Its totient is φ = 39862671840.

The previous prime is 39950090431. The next prime is 39950090459. The reversal of 39950090437 is 73409005993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73409005993 = 37 ⋅1984027189.

It can be written as a sum of positive squares in 2 ways, for example, as 16077986401 + 23872104036 = 126799^2 + 154506^2 .

It is a cyclic number.

It is not a de Polignac number, because 39950090437 - 2³ = 39950090429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39950090431) 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, 43708614 + ... + 43709527.

It is an arithmetic number, because the mean of its divisors is an integer number (10009377259).

Almost surely, 2^39950090437 is an apocalyptic number.

It is an amenable number.

39950090437 is a deficient number, since it is larger than the sum of its proper divisors (87418599).

39950090437 is an equidigital number, since it uses as much as digits as its factorization.

39950090437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87418598.

The product of its (nonzero) digits is 918540, while the sum is 49.

The spelling of 39950090437 in words is "thirty-nine billion, nine hundred fifty million, ninety thousand, four hundred thirty-seven".