769989402 has 160 divisors (see below), whose sum is σ = 2236080000. Its totient is φ = 192316032.

The previous prime is 769989329. The next prime is 769989419. The reversal of 769989402 is 204989967.

769989402 is a `hidden beast` number, since 76 + 99 + 89 + 402 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 278724 + ... + 281472.

It is an arithmetic number, because the mean of its divisors is an integer number (13975500).

Almost surely, 2^769989402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 769989402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1118040000).

769989402 is an abundant number, since it is smaller than the sum of its proper divisors (1466090598).

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

769989402 is a wasteful number, since it uses less digits than its factorization.

769989402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2802 (or 2793 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The square root of 769989402 is about 27748.6828876615. The cubic root of 769989402 is about 916.5614403216.

The spelling of 769989402 in words is "seven hundred sixty-nine million, nine hundred eighty-nine thousand, four hundred two".