39970963890 has 640 divisors, whose sum is σ = 136572936192. Its totient is φ = 8237998080.

The previous prime is 39970963867. The next prime is 39970963891. The reversal of 39970963890 is 9836907993.

39970963890 is a `hidden beast` number, since 399 + 70 + 96 + 3 + 8 + 90 = 666.

It is not an unprimeable number, because it can be changed into a prime (39970963891) by changing a digit.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 104362639 + ... + 104363021.

Almost surely, 2^39970963890 is an apocalyptic number.

39970963890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 39970963890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68286468096).

39970963890 is an abundant number, since it is smaller than the sum of its proper divisors (96601972302).

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

39970963890 is a wasteful number, since it uses less digits than its factorization.

39970963890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 19840464, while the sum is 63.

The spelling of 39970963890 in words is "thirty-nine billion, nine hundred seventy million, nine hundred sixty-three thousand, eight hundred ninety".