997419950 has 12 divisors (see below), whose sum is σ = 1855201200. Its totient is φ = 398967960.

The previous prime is 997419949. The next prime is 997419961. The reversal of 997419950 is 59914799.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 997419892 and 997419901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9974150 + ... + 9974249.

It is an arithmetic number, because the mean of its divisors is an integer number (154600100).

Almost surely, 2^997419950 is an apocalyptic number.

997419950 is a deficient number, since it is larger than the sum of its proper divisors (857781250).

997419950 is a wasteful number, since it uses less digits than its factorization.

997419950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19948411 (or 19948406 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 53.

The square root of 997419950 is about 31581.9560825481. The cubic root of 997419950 is about 999.1392426427.

The spelling of 997419950 in words is "nine hundred ninety-seven million, four hundred nineteen thousand, nine hundred fifty".