49290640789 has 8 divisors (see below), whose sum is σ = 53094472760. Its totient is φ = 45488558016.

The previous prime is 49290640787. The next prime is 49290640829. The reversal of 49290640789 is 98704609294.

It can be written as a sum of positive squares in 4 ways, for example, as 29730380625 + 19560260164 = 172425^2 + 139858^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 49290640789 - 2¹ = 49290640787 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 (49290640781) 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, 378474 + ... + 491755.

It is an arithmetic number, because the mean of its divisors is an integer number (6636809095).

Almost surely, 2^49290640789 is an apocalyptic number.

It is an amenable number.

49290640789 is a deficient number, since it is larger than the sum of its proper divisors (3803831971).

49290640789 is a wasteful number, since it uses less digits than its factorization.

49290640789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874599.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 49290640789 in words is "forty-nine billion, two hundred ninety million, six hundred forty thousand, seven hundred eighty-nine".