19970377 has 8 divisors (see below), whose sum is σ = 23026176. Its totient is φ = 16965312.

The previous prime is 19970351. The next prime is 19970399. The reversal of 19970377 is 77307991.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19970377 - 2¹⁵ = 19937609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19970077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11833 + ... + 13414.

It is an arithmetic number, because the mean of its divisors is an integer number (2878272).

Almost surely, 2^19970377 is an apocalyptic number.

It is an amenable number.

19970377 is a deficient number, since it is larger than the sum of its proper divisors (3055799).

19970377 is a wasteful number, since it uses less digits than its factorization.

19970377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25367.

The product of its (nonzero) digits is 83349, while the sum is 43.

The square root of 19970377 is about 4468.8227756312. The cubic root of 19970377 is about 271.3076801176.

The spelling of 19970377 in words is "nineteen million, nine hundred seventy thousand, three hundred seventy-seven".