1407377478 has 64 divisors (see below), whose sum is σ = 3120671232. Its totient is φ = 420456960.

The previous prime is 1407377459. The next prime is 1407377507. The reversal of 1407377478 is 8747737041.

It is a happy number.

It is a super-2 number, since 2×1407377478² = 3961422731163280968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 369150 + ... + 372942.

It is an arithmetic number, because the mean of its divisors is an integer number (48760488).

Almost surely, 2^1407377478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1407377478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1560335616).

1407377478 is an abundant number, since it is smaller than the sum of its proper divisors (1713293754).

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

1407377478 is a wasteful number, since it uses less digits than its factorization.

1407377478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3949.

The product of its (nonzero) digits is 921984, while the sum is 48.

The square root of 1407377478 is about 37515.0300279768. The cubic root of 1407377478 is about 1120.6505250400.

It can be divided in two parts, 1407 and 377478, that added together give a triangular number (378885 = T₈₇₀).

The spelling of 1407377478 in words is "one billion, four hundred seven million, three hundred seventy-seven thousand, four hundred seventy-eight".