919396408 has 32 divisors (see below), whose sum is σ = 2010348000. Its totient is φ = 394025856.

The previous prime is 919396393. The next prime is 919396409. The reversal of 919396408 is 804693919.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (919396409) 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, 164785 + ... + 170272.

It is an arithmetic number, because the mean of its divisors is an integer number (62823375).

Almost surely, 2^919396408 is an apocalyptic number.

919396408 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

919396408 is an abundant number, since it is smaller than the sum of its proper divisors (1090951592).

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

919396408 is a wasteful number, since it uses less digits than its factorization.

919396408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335084 (or 335066 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 919396408 is about 30321.5502242217. The cubic root of 919396408 is about 972.3760815578.

The spelling of 919396408 in words is "nine hundred nineteen million, three hundred ninety-six thousand, four hundred eight".