949915640 has 128 divisors (see below), whose sum is σ = 2424729600. Its totient is φ = 333020160.

The previous prime is 949915591. The next prime is 949915643. The reversal of 949915640 is 46519949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (949915643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 541004 + ... + 542756.

It is an arithmetic number, because the mean of its divisors is an integer number (18943200).

Almost surely, 2^949915640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 949915640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1212364800).

949915640 is an abundant number, since it is smaller than the sum of its proper divisors (1474813960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

949915640 is a wasteful number, since it uses less digits than its factorization.

949915640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837 (or 1833 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 949915640 is about 30820.7014845542. The cubic root of 949915640 is about 983.0184734221.

The spelling of 949915640 in words is "nine hundred forty-nine million, nine hundred fifteen thousand, six hundred forty".